/* ============================================================
   磻龙号茶业 · 品牌官网样式表
   设计基调：素雅 · 留白 · 宋式
   ============================================================ */

/* ---------- 设计令牌 ---------- */
:root {
  /* 主色：取自产品包装的墨色与米白 */
  --ink:            #1c1a17;   /* 墨 */
  --ink-soft:       #3a3630;   /* 淡墨 */
  --ink-light:      #6b655c;   /* 灰墨 */
  --paper:          #faf8f4;   /* 宣纸白 */
  --paper-warm:     #f4f0e8;   /* 暖宣纸 */
  --paper-deep:     #ebe5d9;   /* 深宣纸 */
  --gold:           #b08d57;   /* 古铜金 */
  --gold-light:     #c9a86c;   /* 浅金 */
  --gold-pale:      #e8dcc4;   /* 淡金 */
  --cinnabar:       #9e3d32;   /* 朱砂 */
  --jade:           #6b7a5e;   /* 茶山青 */
  --line:           #e0d9cb;   /* 描边 */

  /* 字体 */
  --font-serif: "Songti SC", "SimSun", "Noto Serif SC", "Source Han Serif SC", serif;
  --font-sans:  "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Noto Sans SC", sans-serif;

  /* 尺寸 */
  --max:      1240px;
  --radius:   2px;
  --ease:     cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- 基础重置 ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.9;
  color: var(--ink-soft);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

/* ---------- 通用容器 ---------- */
.wrap {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 32px;
}
/* 收窄容器：供需要更紧凑横向节奏的区块使用（如首页品牌优势） */
.wrap.narrow { max-width: 1080px; }

/* ---------- 顶部导航 ---------- */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  background: rgba(250, 248, 244, 0.92);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
  transition: background .4s var(--ease), box-shadow .4s var(--ease);
}
.nav.scrolled { box-shadow: 0 2px 20px rgba(28, 26, 23, 0.06); }

.nav-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 32px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo { display: flex; align-items: center; gap: 11px; flex-shrink: 0; }
/* 导航用两行签名（磻龍號 + PAN LONG HAO）；页脚用完整三行签名 */
.logo-img { height: 44px; width: auto; display: block; }
.footer .logo-img { height: 58px; }

.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links a {
  font-size: 14px;
  color: var(--ink-soft);
  padding: 9px 15px;
  position: relative;
  transition: color .3s var(--ease);
  letter-spacing: .5px;
}
.nav-links a::after {
  content: ""; position: absolute;
  left: 15px; right: 15px; bottom: 4px;
  height: 1px; background: var(--gold);
  transform: scaleX(0); transform-origin: left;
  transition: transform .35s var(--ease);
}
.nav-links a:hover, .nav-links a.active { color: var(--gold); }
.nav-links a:hover::after, .nav-links a.active::after { transform: scaleX(1); }

.nav-cta {
  font-size: 13px; letter-spacing: 1px;
  color: var(--paper) !important;
  background: var(--ink);
  padding: 10px 22px !important;
  transition: background .3s var(--ease);
}
.nav-cta::after { display: none; }
.nav-cta:hover { background: var(--gold) !important; color: #fff !important; }

/* 移动端菜单按钮 */
.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  border: 1px solid var(--line);
  background: none; cursor: pointer;
  position: relative;
}
.nav-toggle span {
  position: absolute; left: 11px; right: 11px; height: 1.5px;
  background: var(--ink); transition: .3s var(--ease);
}
.nav-toggle span:nth-child(1) { top: 14px; }
.nav-toggle span:nth-child(2) { top: 19.5px; }
.nav-toggle span:nth-child(3) { top: 25px; }
.nav-toggle.open span:nth-child(1) { top: 19.5px; transform: rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { top: 19.5px; transform: rotate(-45deg); }

/* ---------- 首屏 Hero ---------- */
/* ============ 首屏 · 全宽通栏主图 + 图上文字层 ============ */
.hero {
  position: relative;
  display: flex; align-items: center;
  min-height: clamp(520px, 62vh, 700px);
  padding: 128px 0 76px;
  background: var(--ink);
  overflow: hidden;
}
/* 主图层 */
.hero-media { position: absolute; inset: 0; z-index: 0; }
.hero-media img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center 42%;
  display: block;
  transform: scale(1.02);
  transition: transform 12s var(--ease);
}
.hero:hover .hero-media img { transform: scale(1.07); }

/* 蒙版层：左侧深色渐隐（承载文字），右侧透出建筑与品牌招牌 */
.hero-overlay {
  position: absolute; inset: 0; z-index: 1;
  background:
    linear-gradient(100deg,
      rgba(20, 18, 15, .90) 0%,
      rgba(20, 18, 15, .74) 22%,
      rgba(20, 18, 15, .46) 42%,
      rgba(20, 18, 15, .14) 62%,
      rgba(20, 18, 15, 0) 82%),
    linear-gradient(to bottom,
      rgba(20, 18, 15, .52) 0%,
      rgba(20, 18, 15, .16) 34%,
      rgba(20, 18, 15, .10) 66%,
      rgba(20, 18, 15, .46) 100%);
  pointer-events: none;
}
/* 底部收边，与深色数据条无缝衔接 */
.hero::after {
  content: "";
  position: absolute; inset: auto 0 0 0; height: 96px; z-index: 1;
  background: linear-gradient(to bottom, transparent, rgba(20, 18, 15, .72));
  pointer-events: none;
}

.hero-grid {
  position: relative; z-index: 2;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 48px;
  align-items: center;
  width: 100%;
}

.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 12px;
  font-size: 12px; letter-spacing: 3.5px;
  color: var(--gold-light); text-transform: uppercase;
  margin-bottom: 24px;
}
.hero-eyebrow::before {
  content: ""; width: 44px; height: 1px; background: var(--gold-light);
}

.hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(34px, 4.4vw, 58px);
  font-weight: 500;
  line-height: 1.3;
  color: #fff;
  letter-spacing: 5px;
  margin-bottom: 24px;
  text-shadow: 0 2px 24px rgba(0, 0, 0, .5);
  max-width: 15em;
}
.hero h1 em {
  font-style: normal;
  color: var(--gold-light);
  position: relative;
}
.hero h1 em::after {
  content: ""; position: absolute;
  left: 0; right: 0; bottom: 6px; height: 8px;
  background: rgba(176, 141, 87, 0.3);
  z-index: -1;
}

.hero-sub {
  font-size: 15.5px;
  color: rgba(250, 248, 244, .82);
  line-height: 2.05;
  max-width: 520px;
  margin-bottom: 36px;
  text-shadow: 0 1px 14px rgba(0, 0, 0, .4);
}
.hero-sub strong { color: #fff; font-weight: 600; }

.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 14px 34px;
  font-size: 14px; letter-spacing: 1.5px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all .35s var(--ease);
  font-family: var(--font-sans);
}
.btn-primary { background: var(--gold); color: #fff; }
.btn-primary:hover { background: var(--gold-light); color: var(--ink); transform: translateY(-2px); }
.btn-ghost { border-color: var(--ink); color: var(--ink); background: none; }
.btn-ghost:hover { background: var(--ink); color: var(--paper); transform: translateY(-2px); }
.btn-light { border-color: rgba(255,255,255,.55); color: #fff; background: rgba(255,255,255,.06); backdrop-filter: blur(4px); }
.btn-light:hover { background: #fff; color: var(--ink); border-color: #fff; transform: translateY(-2px); }

/* ---------- 首屏右侧徽标（品牌创立年份） ---------- */
.hero-badge {
  align-self: flex-end;
  background: rgba(250, 248, 244, .94);
  border: 1px solid rgba(176, 141, 87, .35);
  padding: 18px 26px;
  text-align: right;
  backdrop-filter: blur(6px);
  box-shadow: 0 16px 44px rgba(0, 0, 0, .28);
}
.hero-badge .num {
  font-family: var(--font-serif);
  font-size: 34px; color: var(--gold);
  line-height: 1; letter-spacing: 1px;
}
.hero-badge .num small { font-size: 15px; }
.hero-badge .lbl {
  font-size: 12px; color: var(--ink-light);
  letter-spacing: 1.5px; margin-top: 8px;
}

/* ---------- 数据条 ---------- */
.stats {
  background: var(--ink);
  color: var(--paper);
  padding: 62px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
}
.stat {
  text-align: center;
  padding: 8px 24px;
  position: relative;
}
.stat + .stat::before {
  content: ""; position: absolute;
  left: 0; top: 12%; bottom: 12%; width: 1px;
  background: rgba(250,248,244,.14);
}
.stat .n {
  font-family: var(--font-serif);
  font-size: clamp(30px, 3.4vw, 44px);
  color: var(--gold-light);
  line-height: 1.1; letter-spacing: 1px;
}
.stat .n small { font-size: 0.45em; margin-left: 3px; letter-spacing: 0; }
.stat .t {
  font-size: 13px; letter-spacing: 2px;
  color: rgba(250,248,244,.66);
  margin-top: 12px;
}

/* ---------- 板块通用 ---------- */
.section { padding: 108px 0; }
.section.tight { padding: 84px 0; }
.section.alt { background: var(--paper-warm); }
.section.dark { background: var(--ink); color: var(--paper); }

.sec-head { max-width: 720px; margin-bottom: 60px; }
.sec-head.center { margin-left: auto; margin-right: auto; text-align: center; }

.sec-label {
  display: inline-flex; align-items: center; gap: 11px;
  font-size: 12px; letter-spacing: 3.5px;
  color: var(--gold); text-transform: uppercase;
  margin-bottom: 18px;
}
.sec-label::before {
  content: ""; width: 34px; height: 1px; background: var(--gold);
}
.sec-head.center .sec-label::before { display: none; }

.sec-title {
  font-family: var(--font-serif);
  font-size: clamp(28px, 3.6vw, 42px);
  font-weight: 500;
  color: var(--ink);
  line-height: 1.42;
  letter-spacing: 3px;
}
.section.dark .sec-title { color: var(--paper); }

.sec-desc {
  font-size: 15px; color: var(--ink-light);
  line-height: 2.1; margin-top: 20px;
  max-width: 640px;
}
.sec-head.center .sec-desc { margin-left: auto; margin-right: auto; }
.section.dark .sec-desc { color: rgba(250,248,244,.62); }

/* ---------- 品牌优势卡 ---------- */
.advantages {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
/* 基础卡：纯文字（contact 加盟服务、about 生产优势沿用此形态，勿动其内边距） */
.adv {
  background: var(--paper);
  padding: 44px 30px;
  transition: background .4s var(--ease), transform .4s var(--ease);
}
.adv:hover { background: var(--paper-warm); }
.adv .idx {
  font-family: var(--font-serif);
  font-size: 13px; color: var(--gold);
  letter-spacing: 2px; margin-bottom: 22px;
}
.adv h3 {
  font-family: var(--font-serif);
  font-size: 20px; font-weight: 600;
  color: var(--ink); letter-spacing: 2px;
  margin-bottom: 16px;
}
.adv p { font-size: 13.5px; color: var(--ink-light); line-height: 2; }

/* ---------- 带照片底带的优势卡：.adv.adv-photo ---------- */
.adv-photo {
  padding: 0;
  display: flex;
  flex-direction: column;
}
/* 文字区：撑满剩余高度，把照片带挤到卡片底部 */
.adv-photo .adv-body { padding: 28px 26px 24px; flex: 1 1 auto; }
.adv-photo .idx { margin-bottom: 13px; }
.adv-photo h3 { margin-bottom: 10px; }
.adv-photo p { line-height: 1.95; }

/* 卡片底部照片带：全景比例，四张等高，弱饱和以贴合素雅基调 */
.adv-media {
  margin: auto 0 0;
  position: relative;
  overflow: hidden;
  border-top: 1px solid var(--line);
  background: #e9e5dd;
  aspect-ratio: 21 / 9;
  max-height: 150px;
  flex: 0 0 auto;
}
.adv-media img {
  width: 100%; height: 100%; object-fit: cover;
  filter: saturate(.94) brightness(.98);
  transition: transform .9s var(--ease), filter .6s var(--ease);
}
.adv-photo:hover .adv-media img { transform: scale(1.045); filter: saturate(1) brightness(1); }

/* 紧凑版区块：压低纵向留白，用于首页纵向占比过大的区块
   （「四大品牌优势」「品牌影片」等）。不动全局 .section，
   .adv-section 是 9-15 的旧名，保留兼容。 */
.section.compact,
.adv-section { padding: 68px 0; }
.section.compact .sec-head,
.adv-section .sec-head { margin-bottom: 30px; }
.section.compact .sec-desc,
.adv-section .sec-desc { margin-top: 14px; }

/* ---------- 产品网格 ---------- */
.filter-bar {
  display: flex; gap: 6px; flex-wrap: wrap;
  margin-bottom: 46px;
}
.filter-bar button {
  font-family: var(--font-sans);
  font-size: 13px; letter-spacing: 1.5px;
  padding: 10px 24px;
  border: 1px solid var(--line);
  background: none; color: var(--ink-light);
  cursor: pointer;
  transition: all .3s var(--ease);
}
.filter-bar button:hover { border-color: var(--gold); color: var(--gold); }
.filter-bar button.active {
  background: var(--ink); border-color: var(--ink); color: var(--paper);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 34px;
}
.card {
  background: var(--paper);
  border: 1px solid var(--line);
  display: flex; flex-direction: column;
  transition: transform .45s var(--ease), box-shadow .45s var(--ease), border-color .45s var(--ease);
  overflow: hidden;
}
.card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 50px rgba(28,26,23,.1);
  border-color: var(--gold-pale);
}
.card-img {
  aspect-ratio: 4 / 5;
  background: var(--ink);
  overflow: hidden;
  position: relative;
}
.card-img img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 1.2s var(--ease);
}
.card:hover .card-img img { transform: scale(1.06); }
.card-tag {
  position: absolute; top: 14px; left: 14px;
  font-size: 11px; letter-spacing: 1.5px;
  padding: 5px 12px;
  background: rgba(250,248,244,.94);
  color: var(--ink);
  backdrop-filter: blur(6px);
}
.card-body { padding: 26px 24px 28px; flex: 1; display: flex; flex-direction: column; }
.card-body h3 {
  font-family: var(--font-serif);
  font-size: 20px; font-weight: 600;
  color: var(--ink); letter-spacing: 2px;
  margin-bottom: 10px;
}
.card-body .meta {
  font-size: 12.5px; color: var(--gold);
  letter-spacing: 1px; margin-bottom: 14px;
}
.card-body p {
  font-size: 13.5px; color: var(--ink-light);
  line-height: 1.95; flex: 1;
}
.card-foot {
  margin-top: 20px; padding-top: 18px;
  border-top: 1px solid var(--line);
  display: flex; align-items: center;
  justify-content: space-between;
  font-size: 12.5px; color: var(--ink-light);
}
.card-foot .more {
  color: var(--gold); letter-spacing: 1px;
  display: inline-flex; align-items: center; gap: 6px;
  transition: gap .3s var(--ease);
}
.card:hover .card-foot .more { gap: 11px; }

/* ============================================================
   产品中心 · 七大系列分组
   ============================================================ */
.series-nav {
  display: flex; flex-wrap: wrap; gap: 8px;
  justify-content: center;
  margin-top: 46px;
}
.series-nav a {
  font-size: 13px; letter-spacing: 1.2px;
  padding: 9px 20px;
  border: 1px solid var(--line);
  color: var(--ink-light);
  background: var(--paper);
  transition: all .32s var(--ease);
}
.series-nav a:hover {
  border-color: var(--gold); color: var(--gold);
  transform: translateY(-2px);
}

/* 每个系列的区块 */
.series-block {
  padding: 72px 0;
  border-top: 1px solid var(--line);
}
/* 紧跟系列导航的第一块不加分隔线（:first-of-type 按标签名匹配，此处不可用） */
.series-nav + .series-block { border-top: none; padding-top: 0; }
.series-block:last-of-type { padding-bottom: 0; }

.series-no {
  font-family: var(--font-serif);
  font-size: 12px; letter-spacing: 2.4px;
  color: var(--gold);
  margin-bottom: 14px;
}
.series-head {
  display: flex; align-items: baseline;
  gap: 16px; flex-wrap: wrap;
  margin-bottom: 16px;
}
.series-title {
  font-family: var(--font-serif);
  font-size: 30px; font-weight: 500;
  color: var(--ink); letter-spacing: 3px;
}
.series-en {
  font-size: 11px; letter-spacing: 2.6px;
  color: var(--ink-light); text-transform: uppercase;
}
.series-count {
  margin-left: auto;
  font-size: 12px; letter-spacing: 1px;
  color: var(--ink-light);
}
.series-desc {
  font-size: 14px; color: var(--ink-light);
  line-height: 2.05; max-width: 800px;
  margin-bottom: 42px;
}

/* 产品卡网格（目录式，紧凑） */
.pgrid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px 24px;
}
.pcard {
  background: var(--paper);
  border: 1px solid var(--line);
  overflow: hidden;
  transition: transform .45s var(--ease), box-shadow .45s var(--ease), border-color .45s var(--ease);
}
.pcard:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 46px rgba(28,26,23,.1);
  border-color: var(--gold-pale);
}
.pcard-img {
  aspect-ratio: 2 / 3;
  background: var(--paper-warm);
  overflow: hidden; position: relative;
}
.pcard-img img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 1.2s var(--ease);
}
.pcard:hover .pcard-img img { transform: scale(1.05); }
.pcard-body { padding: 18px 18px 20px; }
.pcard-body h3 {
  font-family: var(--font-serif);
  font-size: 16.5px; font-weight: 600;
  color: var(--ink); letter-spacing: 1.4px;
  line-height: 1.5;
}
.pcard-body .pm {
  font-size: 11.5px; color: var(--gold);
  letter-spacing: .8px; margin-top: 7px;
}
/* 系列内的旧款 / 补充款标记 */
.pcard-flag {
  position: absolute; top: 12px; left: 12px;
  font-size: 10.5px; letter-spacing: 1.2px;
  padding: 4px 10px;
  background: rgba(250,248,244,.93);
  color: var(--ink-light);
  backdrop-filter: blur(6px);
}

/* ---------- 关于（图文） ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 76px;
  align-items: center;
}
.about-media { position: relative; }
.about-media .m1 {
  aspect-ratio: 4/5; overflow: hidden; background: var(--ink);
}
.about-media .m1 img { width: 100%; height: 100%; object-fit: cover; }
.about-media .m2 {
  position: absolute; right: -34px; bottom: -34px;
  width: 46%; aspect-ratio: 1;
  overflow: hidden; background: var(--ink);
  border: 8px solid var(--paper);
}
.about-media .m2 img { width: 100%; height: 100%; object-fit: cover; }

.about-points { margin-top: 34px; display: grid; gap: 20px; }
.about-points li {
  display: flex; gap: 16px; align-items: flex-start;
  font-size: 14px; color: var(--ink-light); line-height: 1.9;
}
.about-points li::before {
  content: "◆";
  color: var(--gold); font-size: 9px;
  margin-top: 8px; flex-shrink: 0;
}
.about-points strong { color: var(--ink-soft); font-weight: 600; }

/* ---------- 品质保障 ---------- */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}
.cert {
  border: 1px solid var(--line);
  background: var(--paper);
  padding: 30px 24px;
  text-align: center;
  transition: all .4s var(--ease);
}
.cert:hover { border-color: var(--gold); background: var(--paper-warm); }
.cert .ico {
  width: 46px; height: 46px; margin: 0 auto 20px;
  border: 1px solid var(--gold); border-radius: 50%;
  display: grid; place-items: center;
  font-family: var(--font-serif); color: var(--gold); font-size: 19px;
}
.cert h4 {
  font-family: var(--font-serif);
  font-size: 17px; color: var(--ink);
  letter-spacing: 2px; margin-bottom: 12px;
}
.cert p { font-size: 13px; color: var(--ink-light); line-height: 1.9; }

/* 质检报告列表 */
.report-list {
  margin-top: 54px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0 40px;
}
.report-item {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px;
  padding: 19px 2px;
  border-bottom: 1px solid var(--line);
  font-size: 14px; color: var(--ink-soft);
  transition: padding-left .35s var(--ease), color .35s var(--ease);
}
.report-item:hover { padding-left: 10px; color: var(--gold); }
.report-item .doc {
  font-family: var(--font-serif);
  font-size: 11px; letter-spacing: 1.5px;
  color: var(--gold);
  border: 1px solid var(--gold-pale);
  padding: 2px 9px;
  flex-shrink: 0;
}

/* ---------- 知识板块 ---------- */
.know-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.know-card {
  border: 1px solid var(--line);
  background: var(--paper);
  padding: 24px 22px 22px;
  transition: all .4s var(--ease);
  position: relative;
  overflow: hidden;
}
.know-card::before {
  content: ""; position: absolute;
  top: 0; left: 0; width: 100%; height: 2px;
  background: var(--gold);
  transform: scaleX(0); transform-origin: left;
  transition: transform .45s var(--ease);
}
.know-card:hover::before { transform: scaleX(1); }
.know-card:hover { background: var(--paper-warm); }
.know-card .k-num {
  font-family: var(--font-serif);
  font-size: 11px; letter-spacing: 2.2px;
  color: var(--gold); margin-bottom: 10px;
}
.know-card h3 {
  font-family: var(--font-serif);
  font-size: 17px; font-weight: 600;
  color: var(--ink); letter-spacing: 1.6px;
  margin-bottom: 8px;
}
.know-card p { font-size: 12.5px; color: var(--ink-light); line-height: 1.8; }

/* 知识板块底部入口 */
.know-more { margin-top: 36px; text-align: center; }

/* ---------- 品牌历程 · 纵向时间轴（关于页） ---------- */
.timeline { position: relative; margin-top: 58px; }
.timeline::before {
  content: "";
  position: absolute; left: 118px; top: 14px; bottom: 14px;
  width: 1px; background: var(--line);
}
.tl-item {
  position: relative;
  display: grid;
  grid-template-columns: 118px 1fr;
  gap: 0 46px;
  padding-bottom: 54px;
}
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
  content: "";
  position: absolute; left: 118px; top: 10px;
  width: 11px; height: 11px; margin-left: -5px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 5px var(--paper-warm);
}
.tl-year {
  font-family: var(--font-serif);
  font-size: 27px; line-height: 1.1;
  color: var(--gold); letter-spacing: 1px;
  text-align: right; padding-right: 34px;
}
.tl-year em {
  display: block; font-style: normal;
  font-size: 15px; letter-spacing: .5px;
  color: var(--ink-light); margin-top: 4px;
}
.tl-body {
  display: grid;
  grid-template-columns: 1fr 430px;
  gap: 46px;
  align-items: start;
}
.tl-text h3 {
  font-family: var(--font-serif);
  font-size: 21px; font-weight: 600;
  color: var(--ink); letter-spacing: 1.5px;
  margin-bottom: 14px;
}
.tl-text p {
  font-size: 14px; color: var(--ink-light);
  line-height: 2.05; max-width: 460px;
}
.tl-figure {
  border: 1px solid var(--line);
  overflow: hidden;
  background: var(--paper-warm);
  box-shadow: 0 14px 38px rgba(28,26,23,.07);
}
.tl-figure img {
  display: block; width: 100%;
  aspect-ratio: 3 / 2; object-fit: cover;
  transition: transform .8s var(--ease);
}
.tl-figure:hover img { transform: scale(1.04); }
.tl-figure.duo {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 8px; border: none; box-shadow: none;
  overflow: visible; background: none;
}
.tl-figure.duo img { border: 1px solid var(--line); }

/* ---------- 品牌历程 · 横向年份轴（首页） ---------- */
.tl-rail {
  position: relative;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 20px;
  margin-top: 50px;
}
.tl-rail::before {
  content: "";
  position: absolute; left: 6px; right: 6px; top: 5px;
  height: 1px; background: var(--line);
}
.tl-node { display: block; position: relative; padding-top: 22px; }
.tl-node::before {
  content: "";
  position: absolute; left: 0; top: 0;
  width: 11px; height: 11px; border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 5px var(--paper);
  transition: transform .4s var(--ease);
}
.tl-node:hover::before { transform: scale(1.25); }
.tl-node-year {
  display: block;
  font-family: var(--font-serif);
  font-size: 19px; color: var(--gold);
  letter-spacing: 1px; margin-bottom: 12px;
}
.tl-node-img {
  display: block; overflow: hidden;
  border: 1px solid var(--line);
  background: var(--paper-warm);
}
.tl-node-img img {
  display: block; width: 100%;
  aspect-ratio: 3 / 2; object-fit: cover;
  transition: transform .7s var(--ease);
}
.tl-node:hover .tl-node-img img { transform: scale(1.06); }
.tl-node-title {
  display: block; font-size: 13px; color: var(--ink-light);
  line-height: 1.65; margin-top: 12px;
}
.tl-more { margin-top: 42px; text-align: center; }

@media (max-width: 1080px) {
  .tl-body { grid-template-columns: 1fr; gap: 26px; }
  .tl-figure { max-width: 580px; }
  .tl-figure.duo { max-width: 580px; }
  .tl-rail { grid-template-columns: repeat(3, 1fr); gap: 30px 20px; }
  .tl-rail::before { display: none; }
}

@media (max-width: 760px) {
  .timeline::before { left: 5px; top: 10px; bottom: 10px; }
  .tl-item {
    grid-template-columns: 1fr; gap: 0;
    padding-left: 32px; padding-bottom: 46px;
  }
  .tl-item::before { left: 5px; top: 8px; }
  .tl-year {
    text-align: left; padding-right: 0;
    font-size: 23px; margin-bottom: 12px;
  }
  .tl-year em { display: inline; margin-left: 6px; font-size: 14px; }
  .tl-text h3 { font-size: 19px; }
  .tl-rail { grid-template-columns: repeat(2, 1fr); gap: 26px 16px; }
  .tl-node-title { font-size: 12.5px; }
}

/* ---------- 品类对照表 ---------- */
.table-wrap { overflow-x: auto; margin-top: 8px; }
table.grade {
  width: 100%; border-collapse: collapse;
  font-size: 13.5px; min-width: 660px;
}
table.grade th, table.grade td {
  padding: 17px 18px; text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
table.grade thead th {
  background: var(--ink); color: var(--paper);
  font-weight: 500; font-size: 13px;
  letter-spacing: 1.5px; border-bottom: none;
}
table.grade tbody tr:hover { background: var(--paper-warm); }
table.grade td:first-child {
  font-family: var(--font-serif);
  font-size: 15px; color: var(--ink);
  letter-spacing: 1.5px; white-space: nowrap;
}

/* ---------- 招商 ---------- */
.invest {
  background:
    linear-gradient(rgba(28,26,23,.9), rgba(28,26,23,.94)),
    radial-gradient(ellipse at 30% 20%, #3a3630, #1c1a17);
  color: var(--paper);
}
.invest-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 72px; align-items: center;
}
.invest h2 {
  font-family: var(--font-serif);
  font-size: clamp(28px, 3.6vw, 42px);
  font-weight: 500; letter-spacing: 3px;
  line-height: 1.45; margin-bottom: 22px;
}
.invest h2 em { font-style: normal; color: var(--gold-light); }
.invest-sub {
  font-size: 15px; color: rgba(250,248,244,.7);
  line-height: 2.1; margin-bottom: 34px; max-width: 460px;
}
.invest-list { display: grid; gap: 1px; background: rgba(250,248,244,.12); border: 1px solid rgba(250,248,244,.12); }
.invest-list li {
  background: rgba(28,26,23,.6);
  padding: 22px 26px;
  display: flex; gap: 18px; align-items: baseline;
}
.invest-list .no {
  font-family: var(--font-serif);
  font-size: 13px; color: var(--gold-light);
  letter-spacing: 2px; flex-shrink: 0;
}
.invest-list .txt { font-size: 14px; color: rgba(250,248,244,.82); line-height: 1.9; }
.invest-list .txt strong { color: #fff; font-weight: 600; }

/* 招商区块内的公众号小二维码（2026-09-18） */
.invest-cta { display: flex; align-items: center; flex-wrap: wrap; gap: 32px; }
.invest-qr {
  display: flex; align-items: center; gap: 14px;
  padding-left: 30px; border-left: 1px solid rgba(250,248,244,.16);
}
.invest-qr img {
  display: block; width: 116px; height: 116px;
  padding: 8px; background: #fff; border-radius: 2px;
}
.invest-qr .iq-t {
  font-family: var(--font-serif); font-size: 14px;
  color: var(--gold-light); letter-spacing: 2px; margin-bottom: 6px;
}
.invest-qr .iq-d { font-size: 12px; color: rgba(250,248,244,.6); line-height: 1.8; }

/* ---------- 联系 ---------- */
.contact-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 72px;
}
.contact-list { display: grid; gap: 30px; }
.contact-item { display: flex; gap: 20px; align-items: flex-start; }
.contact-item .ci-ico {
  width: 42px; height: 42px; flex-shrink: 0;
  border: 1px solid var(--line);
  display: grid; place-items: center;
  color: var(--gold);
  font-family: var(--font-serif); font-size: 15px;
  transition: all .35s var(--ease);
}
.contact-item:hover .ci-ico { background: var(--ink); border-color: var(--ink); color: var(--gold-light); }
.contact-item .ci-t { font-size: 12px; letter-spacing: 2px; color: var(--ink-light); margin-bottom: 6px; }
.contact-item .ci-v {
  font-family: var(--font-serif);
  font-size: 18px; color: var(--ink); letter-spacing: 1px;
}
.contact-item .ci-v.small { font-size: 14px; font-family: var(--font-sans); letter-spacing: 0; line-height: 1.85; color: var(--ink-soft); }

/* 表单 */
.form { display: grid; gap: 18px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { display: grid; gap: 9px; }
.field label { font-size: 12.5px; letter-spacing: 1.5px; color: var(--ink-light); }
.field input, .field textarea, .field select {
  font-family: var(--font-sans);
  font-size: 14px; color: var(--ink);
  padding: 13px 15px;
  border: 1px solid var(--line);
  background: var(--paper);
  outline: none;
  transition: border-color .3s var(--ease), background .3s var(--ease);
  width: 100%;
  border-radius: 0;
}
.field textarea { resize: vertical; min-height: 118px; }
.field input:focus, .field textarea:focus, .field select:focus {
  border-color: var(--gold); background: #fff;
}
.form-note { font-size: 12px; color: var(--ink-light); line-height: 1.8; }
.form-msg {
  display: none; padding: 13px 16px;
  font-size: 13.5px;
  border-left: 2px solid var(--jade);
  background: rgba(107,122,94,.07);
  color: var(--ink-soft);
}
.form-msg.show { display: block; }

/* ---------- 线上选购 / 公众号 ---------- */
.shop-grid {
  display: grid;
  grid-template-columns: 330px 1fr;
  gap: 60px;
  align-items: start;
}
/* 二维码卡片 */
.qr-card {
  border: 1px solid var(--line);
  background: var(--paper);
  padding: 30px 30px 28px;
  text-align: center;
}
.qr-card .qr-img {
  width: 100%; max-width: 228px;
  margin: 0 auto 24px;
  padding: 12px;
  background: #fff;
  border: 1px solid var(--line);
}
.qr-card .qr-img img { width: 100%; height: auto; }
.qr-card .qr-t {
  font-family: var(--font-serif);
  font-size: 17px; color: var(--ink);
  letter-spacing: 4px; margin-bottom: 10px;
}
.qr-card .qr-d { font-size: 12.5px; color: var(--ink-light); line-height: 1.95; }

/* 平台列表 */
.shop-list { border-top: 1px solid var(--line); }
.shop-item {
  display: grid;
  grid-template-columns: 78px 1fr auto;
  align-items: center;
  gap: 24px;
  padding: 27px 4px 27px 0;
  border-bottom: 1px solid var(--line);
  transition: background .35s var(--ease), padding-left .35s var(--ease);
}
.shop-item:hover { background: rgba(176,141,87,.06); padding-left: 14px; }
.shop-item .si-k {
  font-family: var(--font-serif);
  font-size: 16px; color: var(--gold);
  letter-spacing: 2px; text-align: center;
}
.shop-item .si-n { font-size: 15px; color: var(--ink); letter-spacing: .5px; }
.shop-item .si-n em {
  display: block; font-style: normal;
  font-family: var(--font-sans);
  font-size: 12px; color: var(--ink-light);
  letter-spacing: 0; margin-top: 6px;
}
.shop-item .si-go { color: var(--gold); font-size: 16px; transition: transform .35s var(--ease); }
.shop-item:hover .si-go { transform: translateX(6px); }

/* ---------- 页脚 · 线上选购条 ---------- */
.footer-shop {
  display: flex; align-items: center;
  justify-content: space-between;
  gap: 22px; flex-wrap: wrap;
  padding: 28px 0;
  border-bottom: 1px solid rgba(250,248,244,.11);
}
.footer-shop .fs-head {
  font-family: var(--font-serif);
  font-size: 15px; color: var(--paper);
  letter-spacing: 2px;
}
.footer-shop .fs-links { display: flex; gap: 12px; flex-wrap: wrap; }
.footer-shop .fs-links a {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 9px 20px;
  border: 1px solid rgba(250,248,244,.2);
  font-size: 13px; color: rgba(250,248,244,.72);
  letter-spacing: 1px;
  transition: all .35s var(--ease);
}
.footer-shop .fs-links a::after { content: "↗"; font-size: 11px; opacity: .55; }
.footer-shop .fs-links a:hover {
  border-color: var(--gold-light);
  color: var(--gold-light);
  background: rgba(201,168,108,.09);
}

@media (max-width: 1080px) {
  .shop-grid { grid-template-columns: 1fr; gap: 44px; }
  .qr-card { max-width: 360px; margin: 0 auto; }
}
@media (max-width: 760px) {
  .qr-card { max-width: none; padding: 24px 22px 22px; }
  .shop-item { grid-template-columns: 62px 1fr auto; gap: 14px; padding: 22px 2px 22px 0; }
  .shop-item .si-k { font-size: 15px; }
  .shop-item .si-n { font-size: 14px; }
  .shop-item .si-n em { font-size: 11px; word-break: break-all; }
  .footer-shop { flex-direction: column; align-items: flex-start; gap: 16px; padding: 24px 0; }
  .footer-shop .fs-links { width: 100%; }
  .invest-cta { gap: 22px; }
  .invest-qr { padding-left: 0; border-left: 0; gap: 12px; }
  .invest-qr img { width: 104px; height: 104px; padding: 7px; }
  .footer-shop .fs-links a { flex: 1 1 auto; justify-content: center; padding: 10px 14px; }
}

/* ---------- 视频展示 ---------- */
.video-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.video-card {
  border: 1px solid var(--line);
  background: var(--paper);
  overflow: hidden;
  transition: transform .45s var(--ease), box-shadow .45s var(--ease), border-color .45s var(--ease);
}
.video-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 50px rgba(28,26,23,.12);
  border-color: var(--gold-pale);
}
.video-frame {
  position: relative;
  aspect-ratio: 16 / 9;
  background: var(--ink);
  overflow: hidden;
  cursor: pointer;
}
.video-frame img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 1.2s var(--ease), opacity .5s var(--ease);
}
.video-card:hover .video-frame img { transform: scale(1.05); }
.video-frame video {
  width: 100%; height: 100%; object-fit: cover;
  display: block; background: #000;
}
.video-play {
  position: absolute; inset: 0;
  display: grid; place-items: center;
  background: linear-gradient(rgba(28,26,23,.16), rgba(28,26,23,.42));
  transition: background .4s var(--ease), opacity .4s var(--ease);
}
.video-card:hover .video-play { background: linear-gradient(rgba(28,26,23,.06), rgba(28,26,23,.3)); }
.video-play .ring {
  width: 64px; height: 64px;
  border: 1.5px solid rgba(250,248,244,.9);
  border-radius: 50%;
  display: grid; place-items: center;
  background: rgba(28,26,23,.28);
  backdrop-filter: blur(4px);
  transition: transform .4s var(--ease), background .4s var(--ease);
}
.video-card:hover .video-play .ring { transform: scale(1.1); background: rgba(176,141,87,.85); }
.video-play .ring::after {
  content: "";
  width: 0; height: 0;
  border-left: 15px solid var(--paper);
  border-top: 9px solid transparent;
  border-bottom: 9px solid transparent;
  margin-left: 4px;
}
.video-body { padding: 22px 24px 24px; }
.video-body h3 {
  font-family: var(--font-serif);
  font-size: 19px; font-weight: 600;
  color: var(--ink); letter-spacing: 2px;
  margin-bottom: 9px;
}
.video-body p { font-size: 13px; color: var(--ink-light); line-height: 1.9; }

/* 视频灯箱 */
.lightbox {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(14, 13, 11, .94);
  display: none;
  align-items: center; justify-content: center;
  padding: 40px 20px;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}
.lightbox.open { display: flex; }
.lightbox-inner { width: min(1040px, 100%); position: relative; }
.lightbox video {
  width: 100%; display: block;
  background: #000;
  border: 1px solid rgba(250,248,244,.16);
}
.lightbox-title {
  font-family: var(--font-serif);
  color: var(--paper); font-size: 17px;
  letter-spacing: 2px; margin-top: 18px;
  display: flex; align-items: center; gap: 12px;
}
.lightbox-title::before {
  content: ""; width: 26px; height: 1px; background: var(--gold-light);
}
.lightbox-close {
  position: absolute; top: -46px; right: 0;
  width: 38px; height: 38px;
  border: 1px solid rgba(250,248,244,.35);
  background: none; color: var(--paper);
  font-size: 19px; line-height: 1; cursor: pointer;
  transition: all .3s var(--ease);
}
.lightbox-close:hover { background: var(--paper); color: var(--ink); border-color: var(--paper); }

@media (max-width: 900px) {
  .video-grid { grid-template-columns: 1fr; }
}

/* ---------- 页脚 ---------- */
.footer { background: var(--ink); color: rgba(250,248,244,.6); padding: 76px 0 0; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.4fr;
  gap: 54px;
  padding-bottom: 54px;
  border-bottom: 1px solid rgba(250,248,244,.11);
}
.footer-brand p {
  font-size: 13px; line-height: 2;
  margin-top: 22px; max-width: 300px;
  color: rgba(250,248,244,.5);
}
.footer h4 {
  font-family: var(--font-serif);
  font-size: 15px; color: var(--paper);
  letter-spacing: 2px; font-weight: 500;
  margin-bottom: 24px;
}
.footer-links { display: grid; gap: 13px; }
.footer-links a {
  font-size: 13px; color: rgba(250,248,244,.5);
  transition: color .3s var(--ease), padding-left .3s var(--ease);
}
.footer-links a:hover { color: var(--gold-light); padding-left: 5px; }
.footer-contact { display: grid; gap: 14px; font-size: 13px; line-height: 1.9; }
.footer-contact .fk { color: rgba(250,248,244,.38); font-size: 12px; letter-spacing: 1px; }
.footer-contact .fv { color: rgba(250,248,244,.8); }
.footer-bottom {
  padding: 26px 0;
  display: flex; justify-content: space-between;
  align-items: center; gap: 20px; flex-wrap: wrap;
  font-size: 12.5px; color: rgba(250,248,244,.4);
}
.footer-bottom .beian { display: flex; gap: 20px; flex-wrap: wrap; }

/* ---------- 页面页头（内页） ---------- */
.page-head {
  padding: 168px 0 76px;
  background:
    linear-gradient(transparent 55%, rgba(235,229,217,.6)),
    linear-gradient(165deg, var(--paper) 0%, var(--paper-warm) 100%);
  border-bottom: 1px solid var(--line);
  position: relative;
  overflow: hidden;
}
.page-head::after {
  content: "";
  position: absolute; right: -60px; top: 40px;
  width: 320px; height: 320px;
  border: 1px solid rgba(176,141,87,.18);
  border-radius: 50%;
  pointer-events: none;
}
.breadcrumb {
  font-size: 12.5px; color: var(--ink-light);
  letter-spacing: 1px; margin-bottom: 22px;
  display: flex; align-items: center; gap: 10px;
}
.breadcrumb a:hover { color: var(--gold); }
.breadcrumb .sep { color: var(--line); }
.page-head h1 {
  font-family: var(--font-serif);
  font-size: clamp(32px, 4.4vw, 52px);
  font-weight: 500; color: var(--ink);
  letter-spacing: 5px; line-height: 1.35;
  margin-bottom: 20px;
}
.page-head .pd {
  font-size: 15px; color: var(--ink-light);
  line-height: 2.05; max-width: 660px;
}

/* ---------- 内容文章排版 ---------- */
.article { max-width: 820px; }
.article h2 {
  font-family: var(--font-serif);
  font-size: 26px; font-weight: 600;
  color: var(--ink); letter-spacing: 2.5px;
  margin: 52px 0 20px; line-height: 1.5;
  padding-left: 18px; border-left: 3px solid var(--gold);
}
.article h2:first-child { margin-top: 0; }
.article h3 {
  font-family: var(--font-serif);
  font-size: 19px; font-weight: 600;
  color: var(--ink-soft); letter-spacing: 1.5px;
  margin: 34px 0 14px;
}
.article p { font-size: 14.5px; line-height: 2.15; color: var(--ink-light); margin-bottom: 18px; }
.article strong { color: var(--ink-soft); font-weight: 600; }
.article ul { margin: 0 0 20px; display: grid; gap: 11px; }
.article ul li {
  font-size: 14.5px; line-height: 2; color: var(--ink-light);
  padding-left: 24px; position: relative;
}
.article ul li::before {
  content: ""; position: absolute;
  left: 5px; top: 13px; width: 5px; height: 5px;
  background: var(--gold); transform: rotate(45deg);
}
.quote {
  margin: 34px 0;
  padding: 28px 34px;
  background: var(--paper-warm);
  border-left: 3px solid var(--gold);
  font-family: var(--font-serif);
  font-size: 15.5px; line-height: 2.1;
  color: var(--ink-soft); letter-spacing: .8px;
}
.quote cite {
  display: block; margin-top: 14px;
  font-size: 12.5px; color: var(--ink-light);
  font-style: normal; letter-spacing: 1.5px;
}

/* ---------- 两栏图文 ---------- */
.split {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 64px; align-items: center;
}
.split.rev .split-media { order: 2; }
.split-media { aspect-ratio: 5/4; overflow: hidden; background: var(--ink); }
.split-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 1.4s var(--ease); }
.split:hover .split-media img { transform: scale(1.04); }
.split-body .sec-title { font-size: clamp(24px, 2.8vw, 32px); }

/* ---------- 冲泡参数卡 ---------- */
.brew-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 20px; }
.brew {
  text-align: center; padding: 32px 20px;
  border: 1px solid var(--line); background: var(--paper);
  transition: all .4s var(--ease);
}
.brew:hover { border-color: var(--gold); transform: translateY(-4px); }
.brew .v {
  font-family: var(--font-serif);
  font-size: 26px; color: var(--gold); line-height: 1; letter-spacing: 1px;
}
.brew .v small { font-size: 13px; margin-left: 2px; }
.brew .k { font-size: 12.5px; color: var(--ink-light); letter-spacing: 1.5px; margin-top: 13px; }

/* ---------- 入场动画 ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
  * { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .hero { min-height: clamp(480px, 58vh, 620px); }
  .hero-grid { grid-template-columns: 1fr; gap: 34px; }
  .hero h1 { max-width: none; }
  .hero-badge { align-self: flex-start; text-align: left; }
  .hero-overlay {
    background:
      linear-gradient(100deg, rgba(20,18,15,.92) 0%, rgba(20,18,15,.78) 34%, rgba(20,18,15,.52) 62%, rgba(20,18,15,.30) 100%),
      linear-gradient(to bottom, rgba(20,18,15,.4) 0%, rgba(20,18,15,.28) 50%, rgba(20,18,15,.5) 100%);
  }
  .about-grid, .invest-grid, .contact-grid, .split { grid-template-columns: 1fr; gap: 48px; }
  .split.rev .split-media { order: 0; }
  .about-media .m2 { right: 14px; bottom: -22px; }
  .advantages { grid-template-columns: repeat(2, 1fr); }
  .product-grid, .know-grid, .report-list { grid-template-columns: repeat(2, 1fr); }
  .cert-grid, .brew-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
}

@media (max-width: 760px) {
  .wrap, .nav-inner { padding: 0 20px; }
  .section { padding: 74px 0; }
  .section.tight { padding: 58px 0; }
  .section.compact, .adv-section { padding: 58px 0; }
  .adv-media { max-height: 108px; }
  .nav-links {
    position: fixed; inset: 72px 0 auto 0;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    flex-direction: column; align-items: stretch;
    padding: 12px 20px 24px;
    gap: 0;
    transform: translateY(-120%);
    transition: transform .45s var(--ease);
    box-shadow: 0 18px 40px rgba(28,26,23,.1);
  }
  .nav-links.open { transform: translateY(0); }
  .nav-links a { padding: 15px 4px; border-bottom: 1px solid var(--line); }
  .nav-links a::after { display: none; }
  .nav-cta { margin-top: 16px; text-align: center; border-bottom: none !important; }
  .nav-toggle { display: block; }

  .hero { min-height: auto; padding: 112px 0 56px; }
  .hero-media img { object-position: 62% 42%; }
  .hero h1 { letter-spacing: 3px; font-size: clamp(28px, 8vw, 40px); }
  .hero-sub { font-size: 14.5px; line-height: 1.95; }
  .hero-actions .btn { flex: 1 1 auto; justify-content: center; }
  .hero-badge { padding: 14px 20px; }
  .hero-badge .num { font-size: 28px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 34px 0; }
  .stat:nth-child(3)::before { display: none; }
  .advantages, .product-grid, .know-grid, .report-list,
  .cert-grid, .brew-grid, .form-row, .footer-grid { grid-template-columns: 1fr; }
  .pgrid { grid-template-columns: repeat(2, 1fr); gap: 20px 14px; }
  .series-block { padding: 48px 0; }
  .series-title { font-size: 23px; letter-spacing: 2px; }
  .series-count { display: none; }
  .series-desc { margin-bottom: 30px; font-size: 13.5px; }
  .pcard-body { padding: 13px 13px 15px; }
  .pcard-body h3 { font-size: 14.5px; letter-spacing: 1px; }
  .pcard-body .pm { font-size: 11px; margin-top: 5px; }
  .series-nav { margin-top: 34px; gap: 6px; }
  .series-nav a { font-size: 12px; padding: 8px 14px; }
  .footer-grid { gap: 34px; }
  .stat + .stat::before { display: none; }
  .about-media .m2 { display: none; }
  .page-head { padding: 122px 0 52px; }
  .page-head h1 { letter-spacing: 3px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}