/* ============================================================
   远元袜业 品牌官网样式 v2.0
   域名：yywy.com.cn
   设计风格：Bombas 温暖亲民风
   配色：米白 / 浅灰 / 浅蓝 + 远元红点缀
   字体：圆润无衬线，大字号、宽松行距、重留白
   ============================================================ */

:root {
  --bg: #FBF9F5;          /* 米白 */
  --bg-soft: #F3F0EA;     /* 浅灰米 */
  --bg-blue: #EAF1F6;     /* 浅蓝 */
  --card: #FFFFFF;
  --ink: #2E2A26;         /* 正文深色 */
  --ink-soft: #6E675F;    /* 次级文字 */
  --red: #C8102E;         /* 远元红 */
  --red-dark: #A50D24;
  --red-soft: #FBE9EC;    /* 远元红浅底 */
  --line: #E7E2DA;
  --radius: 18px;
  --radius-sm: 12px;
  --shadow: 0 8px 30px rgba(46, 42, 38, 0.06);
  --shadow-lg: 0 20px 50px rgba(46, 42, 38, 0.10);
  --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

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

/* 移动端防溢出：长英文/数字/URL 允许在任意字符处换行，避免撑破容器 */
p, h1, h2, h3, h4, h5, li, td, th, blockquote, figcaption, .btn, .news-tag {
  overflow-wrap: break-word;
  word-break: break-word;
}

.container {
  width: min(1160px, 92%);
  margin: 0 auto;
}

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(251, 249, 245, 0.94);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-logo {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--red), var(--red-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 21px;
  letter-spacing: 1px;
  overflow: hidden;
}

.brand-logo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* 导航栏大号方块 logo（header 用，展示品牌全标识） */
.brand-logo-lg {
  width: 56px;
  height: 56px;
}

.brand-name { line-height: 1.2; }
.brand-name strong { font-size: 20px; color: var(--ink); letter-spacing: 2px; }
.brand-name span { font-size: 11px; color: var(--ink-soft); letter-spacing: 1.5px; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 30px;
}

.nav-links a {
  font-size: 15px;
  color: var(--ink);
  position: relative;
  padding: 6px 0;
  transition: color 0.25s;
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--red);
  transition: width 0.25s;
}

.nav-links a:hover,
.nav-links a.active { color: var(--red); }
.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; }

.nav-cta {
  background: var(--red);
  color: #fff !important;
  padding: 9px 20px !important;
  border-radius: 30px;
  font-size: 14px !important;
  transition: background 0.25s;
}
.nav-cta::after { display: none; }
.nav-cta:hover { background: var(--red-dark); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: 0.3s;
}

/* ---------- 通用区块 ---------- */
.section { padding: 96px 0; }
.section-soft { background: var(--bg-soft); }
.section-blue { background: var(--bg-blue); }

.section-head {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 56px;
}

.eyebrow {
  display: inline-block;
  font-size: 13px;
  letter-spacing: 3px;
  color: var(--red);
  background: var(--red-soft);
  padding: 6px 16px;
  border-radius: 30px;
  margin-bottom: 18px;
  font-weight: 600;
}

.section-head h2 {
  font-size: 38px;
  color: var(--ink);
  letter-spacing: 1px;
  margin-bottom: 16px;
  line-height: 1.35;
}

.section-head p {
  color: var(--ink-soft);
  font-size: 16px;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  background:
    radial-gradient(ellipse at 85% 15%, rgba(200, 16, 46, 0.06), transparent 50%),
    radial-gradient(ellipse at 10% 90%, rgba(234, 241, 246, 0.9), transparent 55%),
    linear-gradient(160deg, #FBF9F5 0%, #F3F0EA 100%);
  padding: 120px 0 100px;
  overflow: hidden;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--line);
  padding: 8px 18px;
  border-radius: 30px;
  font-size: 13px;
  color: var(--ink-soft);
  margin-bottom: 26px;
  box-shadow: var(--shadow);
}
.hero-badge .dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--red);
}

.hero h1 {
  font-size: 54px;
  line-height: 1.25;
  color: var(--ink);
  letter-spacing: 1px;
  margin-bottom: 22px;
  font-weight: 700;
}
.hero h1 em {
  font-style: normal;
  color: var(--red);
}

.hero-sub {
  font-size: 18px;
  color: var(--ink-soft);
  max-width: 540px;
  margin-bottom: 36px;
}
.hero-sub strong { color: var(--ink); font-weight: 600; }

.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 30px;
  border-radius: 30px;
  font-size: 15px;
  font-weight: 600;
  transition: all 0.25s;
  border: none;
  cursor: pointer;
}
.btn-primary { background: var(--red); color: #fff; }
.btn-primary:hover { background: var(--red-dark); transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.btn-outline { background: transparent; color: var(--ink); border: 1.5px solid var(--ink); }
.btn-outline:hover { background: var(--ink); color: #fff; transform: translateY(-2px); }

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 48px;
}
.hero-stat { text-align: left; }
.hero-stat b {
  display: block;
  font-size: 30px;
  color: var(--red);
  letter-spacing: 1px;
}
.hero-stat span { font-size: 13px; color: var(--ink-soft); }

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
}

.hero-card {
  background: #fff;
  border-radius: 24px;
  box-shadow: var(--shadow-lg);
  padding: 40px 36px;
  width: 100%;
  max-width: 420px;
  border: 1px solid rgba(255, 255, 255, 0.6);
}

.hero-card .ph {
  min-height: 240px;
  margin-bottom: 24px;
  font-size: 16px;
}

.hero-card h3 { font-size: 18px; color: var(--ink); margin-bottom: 8px; }
.hero-card p { font-size: 14px; color: var(--ink-soft); margin-bottom: 18px; }
.hero-card .tags { display: flex; flex-wrap: wrap; gap: 8px; }
.hero-card .tags span {
  font-size: 12px;
  background: var(--bg-soft);
  color: var(--ink-soft);
  padding: 5px 12px;
  border-radius: 20px;
}

/* ---------- 占位图（后续替换真实图片） ---------- */
.ph {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background:
    linear-gradient(135deg, #F3F0EA 0%, #E7E2DA 100%);
  border: 1.5px dashed #C9C2B6;
  border-radius: 16px;
  color: #8A8378;
  font-size: 14px;
  letter-spacing: 1px;
  min-height: 200px;
  padding: 20px;
  line-height: 1.6;
}
.ph small { display: block; font-size: 12px; color: #A39C90; margin-top: 4px; }

/* ---------- 图片装饰（真实图片） ---------- */
.hero-img {
  border-radius: 16px;
  overflow: hidden;
  margin-bottom: 24px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
  aspect-ratio: 1 / 1;
}
.hero-img.hero-img-wide {
  aspect-ratio: 16 / 9;
}
.hero-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.promise-img {
  border-radius: 16px;
  overflow: hidden;
  margin-bottom: 20px;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.07);
}
.promise-img {
  aspect-ratio: 4 / 3;
}
.promise-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}
.promise-card:hover .promise-img img { transform: scale(1.05); }
.visual-img {
  border-radius: 14px;
  overflow: hidden;
  margin-bottom: 24px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.25);
}
.visual-img {
  aspect-ratio: 3 / 2;
}
.visual-img.portrait {
  aspect-ratio: 3 / 2;
}
.visual-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.banner-img {
  border-radius: 20px;
  overflow: hidden;
  margin: 0 0 40px;
  box-shadow: var(--shadow);
}

.brand-showcase {
  text-align: center;
  margin: 0 0 40px;
}

.brand-showcase img {
  max-width: 300px;
  width: 100%;
  display: block;
  margin: 0 auto;
  border-radius: 20px;
  box-shadow: var(--shadow);
}
.banner-img {
  aspect-ratio: 2 / 1;
}
/* 方图横幅：完整展示方形产品图，避免 2:1 横切；桌面端限宽居中 */
.banner-img.banner-sq {
  aspect-ratio: 1 / 1;
  max-width: 860px;
  margin-left: auto;
  margin-right: auto;
}
.banner-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
/* 通栏横幅：按主体构图精修裁切锚点，避免主体被切 */
.banner-img img[src="images/yy-model-color.jpg"] { object-position: center 72%; }
.banner-img img[src="images/yy-model-blackbox.jpg"] { object-position: center 72%; }
.banner-img img[src="images/yy-sock-detail.jpg"] { object-position: center 38%; }
.banner-img img[src="images/yy-gift-men6.jpg"] { object-position: center 30%; }
.banner-img img[src="images/yy-sock-giftbox.jpg"] { object-position: center 55%; }

/* knowledge.html 产品图完整显示修复（针对性，不影响其他页面） */
.hero-img img[src="images/yy-sock-antibac-02.jpg"] {
  object-fit: contain;
}
.promise-img-square {
  aspect-ratio: 1 / 1;
}
.promise-img-square img {
  object-fit: contain;
}
.banner-img img[src="images/yy-sock-stack.jpg"] {
  object-fit: cover;
  object-position: center 20%;
}
.banner-img img[src="images/yy-sock-giftbox.jpg"] {
  object-fit: cover;
  object-position: center;
}
.cta-img {
  border-radius: 16px;
  overflow: hidden;
  margin-bottom: 28px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}
.cta-img {
  aspect-ratio: 3 / 2;
}
.cta-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.product-thumb {
  aspect-ratio: 1 / 1;
}
.product-thumb.thumb-portrait {
  aspect-ratio: 3 / 4;
}
.product-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}
.product-card:hover .product-thumb img { transform: scale(1.05); }

/* ---------- 三大承诺 ---------- */
.promise-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

/* ---------- 原材料（从一朵棉花开始） ---------- */
.raw-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.raw-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.raw-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}
.raw-card h3 { font-size: 18px; color: var(--ink); margin-bottom: 8px; }
.raw-card p { font-size: 14px; color: var(--ink-soft); }
.cert-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.cert-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.cert-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}
.cert-img {
  border-radius: calc(var(--radius) - 4px);
  overflow: hidden;
  aspect-ratio: 4 / 3;
  margin-bottom: 14px;
}
.cert-img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #fff;
  display: block;
}
.cert-caption {
  font-size: 13px;
  color: var(--ink-soft);
  line-height: 1.6;
}
.promise-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 38px 30px;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}
.promise-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--red), #E85D6E);
}
.promise-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.promise-num {
  font-size: 13px;
  font-weight: 700;
  color: var(--red);
  letter-spacing: 2px;
  margin-bottom: 12px;
}
.promise-card h3 { font-size: 24px; color: var(--ink); margin-bottom: 12px; }
.promise-card p { font-size: 14px; color: var(--ink-soft); margin-bottom: 18px; }
.promise-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.promise-meta span {
  font-size: 12px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  color: var(--ink-soft);
  padding: 5px 12px;
  border-radius: 20px;
}

/* ---------- 溯源卡（认知专题页） ---------- */
.trace-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}
.trace-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 40px 34px;
  transition: all 0.3s;
}
.trace-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.trace-head {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}
.trace-no {
  width: 52px; height: 52px;
  flex-shrink: 0;
  border-radius: 14px;
  background: var(--red-soft);
  color: var(--red);
  font-size: 20px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}
.trace-head h3 { font-size: 22px; color: var(--ink); line-height: 1.4; }
.trace-head h3 small { display: block; font-size: 13px; color: var(--ink-soft); font-weight: 400; margin-top: 4px; }
.trace-card p { font-size: 15px; color: var(--ink-soft); margin-bottom: 14px; }
.trace-card .trace-role {
  background: var(--bg-blue);
  border-radius: var(--radius-sm);
  padding: 14px 18px;
  font-size: 14px;
  color: var(--ink);
}
.trace-card .trace-role b { color: var(--red); }

/* ---------- 检测证据 ---------- */
.evidence-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.evidence-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 36px 30px;
  text-align: center;
  transition: all 0.3s;
}
.evidence-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.evidence-card .icon {
  width: 64px; height: 64px;
  margin: 0 auto 18px;
  border-radius: 50%;
  background: var(--red-soft);
  color: var(--red);
  font-size: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.evidence-card h3 { font-size: 19px; color: var(--ink); margin-bottom: 10px; }
.evidence-card p { font-size: 14px; color: var(--ink-soft); }
.evidence-card .badge {
  display: inline-block;
  margin-top: 14px;
  font-size: 12px;
  font-weight: 600;
  color: var(--red);
  background: var(--red-soft);
  padding: 5px 14px;
  border-radius: 20px;
}

/* ---------- 产品概览 ---------- */
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.product-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all 0.3s;
  display: flex;
  flex-direction: column;
}
.product-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.product-thumb {
  min-height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  letter-spacing: 2px;
  color: #8A8378;
  font-weight: 600;
  background: linear-gradient(135deg, #F3F0EA, #E7E2DA);
  overflow: hidden;
}
.product-body { padding: 26px; flex: 1; display: flex; flex-direction: column; }
.product-body h3 { font-size: 19px; color: var(--ink); margin-bottom: 10px; }
.product-body p { font-size: 14px; color: var(--ink-soft); flex: 1; }
.product-body .tag-row { margin-top: 16px; display: flex; flex-wrap: wrap; gap: 8px; }
.product-body .tag-row span {
  font-size: 12px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  color: var(--ink-soft);
  padding: 4px 10px;
  border-radius: 20px;
}

/* ---------- 品牌背书 ---------- */
.endorse-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.endorse-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 36px 30px;
  border: 1px solid var(--line);
  position: relative;
  transition: all 0.3s;
}
.endorse-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.endorse-card .num {
  font-size: 40px;
  font-weight: 700;
  color: var(--red);
  line-height: 1.1;
  margin-bottom: 10px;
}
.endorse-card .num small { font-size: 18px; font-weight: 600; }
.endorse-card h3 { font-size: 17px; color: var(--ink); margin-bottom: 8px; }
.endorse-card p { font-size: 14px; color: var(--ink-soft); }

/* ---------- 品牌故事预览 ---------- */
.story-preview {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 56px;
  align-items: center;
}
.story-preview .text h2 {
  font-size: 34px;
  color: var(--ink);
  margin-bottom: 20px;
  letter-spacing: 1px;
  line-height: 1.4;
}
.story-preview .text p { color: var(--ink-soft); margin-bottom: 16px; font-size: 15px; }
.story-preview .text .quote {
  border-left: 4px solid var(--red);
  padding: 14px 20px;
  background: var(--red-soft);
  border-radius: 0 10px 10px 0;
  color: var(--ink);
  font-size: 15px;
  margin: 24px 0;
}
/* ---------- 品牌事实（GEO 可引用文本） ---------- */
.fact-lines { max-width: 860px; }
.fact-lines p {
  font-size: 15px;
  line-height: 1.9;
  color: var(--ink-soft);
  margin-bottom: 16px;
  padding-left: 20px;
  border-left: 2px solid var(--red-soft);
}
.story-preview .visual {
  background: linear-gradient(150deg, #3A3631, #2E2A26);
  border-radius: 20px;
  padding: 32px 32px 36px;
  color: #fff;
}
.story-preview .visual h3 { font-size: 22px; margin-bottom: 20px; letter-spacing: 2px; }
.story-preview .visual ul li {
  padding: 10px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
  font-size: 15px;
  display: flex;
  gap: 12px;
}
.story-preview .visual ul li:last-child { border-bottom: none; }
.story-preview .visual ul li::before { content: "·"; color: var(--red); font-weight: 700; }

/* ---------- 承诺表格（品牌介绍页） ---------- */
.promise-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--card);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--line);
}
.promise-table th,
.promise-table td {
  padding: 18px 22px;
  text-align: left;
  font-size: 15px;
  border-bottom: 1px solid var(--line);
}
.promise-table th {
  background: var(--bg-soft);
  color: var(--ink);
  font-weight: 600;
}
.promise-table tr:last-child td { border-bottom: none; }
.promise-table td:first-child { font-weight: 600; color: var(--red); }

/* ---------- 流程步骤 ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  margin-top: 40px;
}
.step {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 26px 20px;
  text-align: center;
  position: relative;
}
.step .step-no {
  width: 40px; height: 40px;
  margin: 0 auto 12px;
  border-radius: 50%;
  background: var(--red);
  color: #fff;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}
.step h4 { font-size: 15px; color: var(--ink); margin-bottom: 6px; }
.step p { font-size: 12px; color: var(--ink-soft); }

/* ---------- 理念卡 ---------- */
.idea-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 40px;
}
.idea-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 34px 28px;
  transition: all 0.3s;
}
.idea-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.idea-card .icon { font-size: 30px; margin-bottom: 16px; }
.idea-card h3 { font-size: 18px; color: var(--ink); margin-bottom: 10px; }
.idea-card p { font-size: 14px; color: var(--ink-soft); }

/* ---------- 产业布局 ---------- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px 26px;
  transition: all 0.3s;
}

.feature:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }

.feature-icon {
  font-size: 34px;
  line-height: 1;
  margin-bottom: 16px;
}

.feature h3 {
  font-size: 18px;
  color: var(--ink);
  margin-bottom: 10px;
  letter-spacing: 0.5px;
}

.feature p {
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.7;
}

/* ---------- 数字大卡（4000小时） ---------- */
.big-number {
  text-align: center;
  padding: 60px 40px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.big-number .num {
  font-size: 72px;
  font-weight: 700;
  color: var(--red);
  line-height: 1.1;
}
.big-number .num small { font-size: 28px; }
.big-number h3 { font-size: 22px; color: var(--ink); margin: 12px 0 10px; }
.big-number p { font-size: 15px; color: var(--ink-soft); max-width: 560px; margin: 0 auto; }

/* ---------- CTA ---------- */
.cta-band {
  background: linear-gradient(135deg, var(--red-dark), var(--red));
  border-radius: 24px;
  padding: 64px 48px;
  text-align: center;
  color: #fff;
}
.cta-band h2 { font-size: 32px; margin-bottom: 14px; letter-spacing: 1px; }
.cta-band p { opacity: 0.9; margin-bottom: 30px; font-size: 15px; }
.cta-band .btn-outline { border-color: #fff; color: #fff; }
.cta-band .btn-outline:hover { background: #fff; color: var(--red-dark); }

/* ---------- 页脚 ---------- */
.site-footer {
  background: #2E2A26;
  color: rgba(255, 255, 255, 0.75);
  padding: 64px 0 0;
  margin-top: 40px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 48px;
}
.footer-brand .brand-name strong { color: #fff; }
.footer-brand .brand-name span { color: rgba(255, 255, 255, 0.5); }
.footer-brand p { font-size: 14px; margin-top: 16px; color: rgba(255, 255, 255, 0.6); }
.footer-col h4 {
  color: #fff;
  font-size: 15px;
  letter-spacing: 1px;
  margin-bottom: 18px;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a { font-size: 14px; color: rgba(255, 255, 255, 0.65); transition: color 0.2s; }
.footer-col ul a:hover { color: #E85D6E; }
.footer-col p { font-size: 14px; color: rgba(255, 255, 255, 0.65); margin-bottom: 8px; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 0;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.45);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 页面横幅（内页） ---------- */
.page-hero {
  background:
    radial-gradient(ellipse at 85% 15%, rgba(200, 16, 46, 0.06), transparent 50%),
    linear-gradient(160deg, #FBF9F5, #F3F0EA);
  padding: 84px 0 68px;
  text-align: center;
}
.page-hero h1 { font-size: 42px; color: var(--ink); letter-spacing: 2px; margin-bottom: 14px; }
.page-hero p { color: var(--ink-soft); font-size: 16px; max-width: 680px; margin: 0 auto; }
.page-hero .hero-badge { margin-bottom: 20px; }

/* ---------- 产品标准页 ---------- */
.series-block { margin-bottom: 72px; }
.series-block:last-child { margin-bottom: 0; }
.series-head {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-bottom: 32px;
}
.series-head .bar { width: 6px; height: 34px; background: var(--red); border-radius: 3px; }
.series-head h2 { font-size: 26px; color: var(--ink); }
.series-head p { color: var(--ink-soft); font-size: 14px; }

/* ---------- 品牌故事 ---------- */
.timeline { position: relative; max-width: 860px; margin: 0 auto; padding-left: 40px; }
.timeline::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(var(--red), #E85D6E);
}
.timeline-item { position: relative; padding-bottom: 44px; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item::before {
  content: "";
  position: absolute;
  left: -34px;
  top: 6px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--red);
}
.timeline-item .year {
  font-size: 15px;
  font-weight: 700;
  color: var(--red);
  letter-spacing: 1px;
  margin-bottom: 6px;
}
.timeline-item h3 { font-size: 20px; color: var(--ink); margin-bottom: 8px; }
.timeline-item p { color: var(--ink-soft); font-size: 15px; }

/* ---------- 联系我们 ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 48px;
  align-items: start;
}
.contact-info .info-item {
  display: flex;
  gap: 18px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}
.contact-info .info-item:last-child { border-bottom: none; }
.contact-info .info-icon {
  width: 48px; height: 48px;
  flex-shrink: 0;
  border-radius: 12px;
  background: var(--red-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
}
.contact-info .info-item h3 { font-size: 16px; color: var(--ink); margin-bottom: 4px; }
.contact-info .info-item p { font-size: 14px; color: var(--ink-soft); }

.contact-form {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 40px 36px;
  box-shadow: var(--shadow);
}
.contact-form h2 { font-size: 22px; color: var(--ink); margin-bottom: 8px; }
.contact-form .form-tip { font-size: 13px; color: var(--ink-soft); margin-bottom: 26px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 14px; color: var(--ink); margin-bottom: 8px; font-weight: 600; }
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 13px 16px;
  border: 1px solid var(--line);
  border-radius: 10px;
  font-size: 14px;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  transition: border-color 0.2s, background 0.2s;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--red);
  background: #fff;
}
.form-group textarea { resize: vertical; min-height: 120px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-submit { width: 100%; justify-content: center; }

.form-success {
  display: none;
  text-align: center;
  padding: 40px 20px;
}
.form-success .ok {
  width: 64px; height: 64px;
  border-radius: 50%;
  background: var(--red-soft);
  color: var(--red);
  font-size: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 18px;
}
.form-success h4 { font-size: 20px; color: var(--ink); margin-bottom: 8px; }
.form-success p { font-size: 14px; color: var(--ink-soft); }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .promise-grid { grid-template-columns: repeat(2, 1fr); }
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .endorse-grid { grid-template-columns: repeat(2, 1fr); }
  .idea-grid { grid-template-columns: repeat(2, 1fr); }
  .evidence-grid { grid-template-columns: repeat(2, 1fr); }
  .cert-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .hero { padding: 72px 0 64px; }
  .hero h1 { font-size: 38px; }
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero-inner > * { min-width: 0; }
  .hero-stats { grid-template-columns: repeat(3, 1fr); gap: 12px; }
  .hero-stat b { font-size: 24px; overflow-wrap: anywhere; word-break: break-all; }
  .section-head h2 { font-size: 30px; }
  .story-preview { grid-template-columns: 1fr; gap: 36px; }
  .contact-grid { grid-template-columns: 1fr; }
  .page-hero h1 { font-size: 32px; }
  .trace-grid { grid-template-columns: 1fr; }
  .big-number .num { font-size: 56px; }

  .nav-toggle { display: flex; }
  .nav-links {
    position: fixed;
    top: 76px;
    left: 0;
    right: 0;
    background: var(--bg);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 0 6%;
    box-shadow: 0 20px 30px rgba(0, 0, 0, 0.08);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
  }
  .nav-links.open { max-height: 480px; padding: 12px 6% 20px; }
  .nav-links a { width: 100%; padding: 14px 0; border-bottom: 1px solid var(--line); }
  .nav-links a::after { display: none; }
  .nav-cta { margin-top: 12px; text-align: center; }
}

@media (max-width: 560px) {
  .promise-grid { grid-template-columns: 1fr; }
  .raw-grid { grid-template-columns: 1fr; }
  .products-grid { grid-template-columns: 1fr; }
  .endorse-grid { grid-template-columns: 1fr; }
  .idea-grid { grid-template-columns: 1fr; }
  .evidence-grid { grid-template-columns: 1fr; }
  .cert-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { justify-content: center; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .cta-band { padding: 44px 24px; }
}

/* ============================================================
   FAQ 区块样式（GEO 友好）
   ============================================================ */
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0 20px;
  box-shadow: var(--shadow);
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.faq-item[open] {
  border-color: var(--red);
  box-shadow: var(--shadow-lg);
}

.faq-item summary {
  cursor: pointer;
  list-style: none;
  padding: 18px 0;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--ink);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.faq-item summary::-webkit-details-marker { display: none; }

.faq-item summary::after {
  content: "+";
  flex-shrink: 0;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--red-soft);
  color: var(--red);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 600;
  transition: transform 0.25s ease, background 0.25s ease, color 0.25s ease;
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
  background: var(--red);
  color: #fff;
}

.faq-item p {
  padding: 0 0 18px;
  color: var(--ink-soft);
  line-height: 1.8;
}

/* ============================================================
   行业动态（news）板块样式 v1.0
   ============================================================ */

.news-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-top: 8px;
}

.news-item {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 30px;
  box-shadow: var(--shadow);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.news-item:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.news-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}

.news-tag {
  display: inline-block;
  background: var(--red-soft);
  color: var(--red);
  font-size: 12px;
  font-weight: 600;
  padding: 3px 12px;
  border-radius: 999px;
}

.news-meta time {
  font-size: 13px;
  color: var(--ink-soft);
}

.news-item h3 {
  font-size: 1.35rem;
  line-height: 1.5;
  margin-bottom: 10px;
}

.news-item h3 a:hover {
  color: var(--red);
}

.news-item p {
  color: var(--ink-soft);
  margin-bottom: 16px;
}

.article-body {
  max-width: 760px;
  margin: 0 auto;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 40px 44px;
  box-shadow: var(--shadow);
}

.article-body p {
  margin-bottom: 18px;
  color: var(--ink);
}

.article-body h2 {
  font-size: 1.3rem;
  margin: 30px 0 14px;
  padding-left: 14px;
  border-left: 4px solid var(--red);
}

.article-body ul {
  list-style: disc;
  padding-left: 22px;
  margin-bottom: 18px;
  color: var(--ink);
}

.article-body ul li {
  margin-bottom: 8px;
}

@media (max-width: 640px) {
  .news-item { padding: 22px 20px; }
  .article-body { padding: 28px 22px; }
}