/* ============================================================
   LINARA LINEN — V5 优化版 · 编辑杂志式 × 工业编号 × 黑白灰
   Fonts: Playfair Display (大标题) · Space Grotesk (编号/标签) · Inter (正文)
   ============================================================ */

:root {
  /* 色板 — 黑白灰 + 亚麻米点缀 */
  --ink:        #141414;
  --ink-2:      #2E2E2A;
  --gray-600:   #55554E;
  --gray-400:   #8A8A82;
  --line:       #E3E3DE;
  --line-2:     #C9C9C2;
  --bg:         #FFFFFF;
  --bg-warm:    #F6F6F3;
  --bg-mid:     #EDEDE9;
  --bg-dark:    #161615;
  --flax:       #C8B090;   /* 亚麻米 —— 仅点缀：hover 上色 / 印章 / 强调 */

  --serif: "Playfair Display", Georgia, serif;
  --grotesk: "Space Grotesk", "Inter", sans-serif;
  --sans: "Inter", -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;

  --container: 1280px;
  --pad: clamp(20px, 4vw, 44px);
  --sec: clamp(80px, 10vw, 140px);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  font-size: 16px; line-height: 1.75; color: var(--gray-600);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ---- 可见网格线背景（12 列，瑞士工业感） ---- */
body::before {
  content: ""; position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background:
    repeating-linear-gradient(90deg, rgba(20,20,20,.045) 0 1px, transparent 1px calc(100% / 12));
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
h1, h2, h3, h4 { font-family: var(--serif); font-weight: 500; color: var(--ink); line-height: 1.06; letter-spacing: -0.015em; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 var(--pad); }

/* ---- 标签：工业编号感 ---- */
.eyebrow {
  font-family: var(--grotesk); font-size: 11px; font-weight: 500;
  letter-spacing: 0.3em; text-transform: uppercase; color: var(--gray-400);
  display: inline-flex; align-items: center; gap: 12px;
}
.eyebrow::before { content: ""; width: 28px; height: 1px; background: var(--ink); }
.eyebrow--dark { color: rgba(255,255,255,.55); }
.eyebrow--dark::before { background: #fff; }

.section { padding: var(--sec) 0; position: relative; }
.section--warm { background: var(--bg-warm); }
.section--dark { background: var(--bg-dark); color: #B9B9B0; }

/* ============================================================
   滚动揭示动画
   ============================================================ */
.reveal { opacity: 0; transform: translateY(30px); transition: opacity .9s cubic-bezier(.16,1,.3,1), transform .9s cubic-bezier(.16,1,.3,1); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } }

/* ============================================================
   顶部公告栏 —— 跑马灯
   ============================================================ */
.announce { background: var(--ink); color: #EDEDE8; overflow: hidden; }
.announce-track { display: flex; width: max-content; animation: marquee 26s linear infinite; }
.announce-track span {
  display: inline-flex; align-items: center; white-space: nowrap;
  font-family: var(--grotesk); font-size: 11.5px; letter-spacing: 0.28em; text-transform: uppercase;
  padding: 10px 0;
}
.announce-track span b { color: var(--flax); font-weight: 600; }
.announce-track span em { color: #fff; font-style: normal; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ============================================================
   导航
   ============================================================ */
.site-header { position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,.92); backdrop-filter: blur(12px); border-bottom: 1px solid var(--line); }
.nav { display: flex; align-items: center; justify-content: space-between; height: 78px; }
.logo { font-family: var(--serif); font-size: 26px; letter-spacing: 0.16em; color: var(--ink); font-weight: 600; }
.logo span { font-style: italic; font-weight: 400; color: var(--gray-400); margin-left: 6px; }
.logo .dot { color: var(--flax); }
.nav-menu { display: flex; align-items: center; gap: 34px; }
.nav-menu > li > a {
  font-family: var(--grotesk); font-size: 12px; font-weight: 500; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--gray-600); position: relative; padding: 10px 0;
}
.nav-menu > li > a:hover { color: var(--ink); }
.nav-menu > li > a::after {
  content: ""; position: absolute; left: 0; bottom: 4px; height: 2px; width: 0;
  background: var(--flax); transition: width .3s ease;
}
.nav-menu > li > a:hover::after { width: 100%; }
.nav-cta { display: flex; align-items: center; gap: 18px; }
.nav-wa { width: 40px; height: 40px; border: 1px solid var(--line-2); border-radius: 50%; display: grid; place-items: center; transition: all .25s; }
.nav-wa:hover { background: var(--ink); border-color: var(--ink); }
.nav-wa svg { width: 17px; height: 17px; fill: var(--ink); transition: fill .25s; }
.nav-wa:hover svg { fill: #fff; }

.has-drop { position: relative; }
.drop {
  position: absolute; top: 100%; left: -28px; min-width: 320px; background: #fff;
  border: 1px solid var(--line); box-shadow: 0 24px 60px rgba(0,0,0,.10);
  padding: 12px 0; opacity: 0; visibility: hidden; transform: translateY(10px); transition: all .25s ease; z-index: 60;
}
.has-drop:hover .drop { opacity: 1; visibility: visible; transform: translateY(0); }
.drop a { display: block; padding: 12px 30px; }
.drop a small { display: block; font-family: var(--sans); font-size: 12px; color: var(--gray-400); margin-top: 2px; letter-spacing: 0; text-transform: none; }
.drop a:hover { background: var(--bg-warm); color: var(--ink); }

.burger { display: none; background: none; border: 0; cursor: pointer; padding: 8px; }
.burger span { display: block; width: 26px; height: 2px; background: var(--ink); margin: 5px 0; transition: all .25s; }

/* ============================================================
   按钮 —— 工业标签式
   ============================================================ */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 12px;
  font-family: var(--grotesk); font-size: 12px; font-weight: 600; letter-spacing: 0.22em; text-transform: uppercase;
  padding: 16px 38px; border: 1.5px solid var(--ink); cursor: pointer;
  transition: all .25s ease; white-space: nowrap; position: relative; overflow: hidden;
}
.btn--dark { background: var(--ink); color: #fff; }
.btn--dark:hover { background: var(--ink-2); border-color: var(--ink-2); }
.btn--ghost { background: transparent; color: var(--ink); }
.btn--ghost:hover { background: var(--ink); color: #fff; }
.btn--light { background: #fff; color: var(--ink); border-color: #fff; }
.btn--light:hover { background: var(--bg-mid); }
.btn--ghost-light { background: transparent; color: #fff; border-color: rgba(255,255,255,.55); }
.btn--ghost-light:hover { background: #fff; color: var(--ink); border-color: #fff; }
.btn .arr { font-family: var(--sans); font-weight: 400; transition: transform .25s; }
.btn:hover .arr { transform: translateX(4px); }

/* ============================================================
   Hero —— 超大标题 + 竖排文字 + 跑马灯底
   ============================================================ */
.hero { position: relative; min-height: 640px; display: flex; align-items: flex-end; overflow: hidden; }
@media (min-width: 900px) { .hero { min-height: 740px; } }
.hero img.bg { position: absolute; inset: -4%; width: 108%; height: 108%; object-fit: cover; will-change: transform; }
.hero::after {
  content: ""; position: absolute; inset: 0;
  background:
    linear-gradient(90deg, rgba(0,0,0,.62) 0%, rgba(0,0,0,.28) 38%, rgba(0,0,0,.05) 72%),
    linear-gradient(180deg, rgba(0,0,0,.35) 0%, rgba(0,0,0,.04) 45%, rgba(0,0,0,.65) 100%);
}
.hero-inner { position: relative; z-index: 2; width: 100%; padding: clamp(100px, 15vh, 170px) 0 clamp(70px, 10vh, 100px); }
.hero h1 {
  color: #fff; font-size: clamp(52px, 8.2vw, 118px); line-height: .98;
  margin: 22px 0 0; max-width: 8.5em; letter-spacing: -0.02em;
}
.hero h1 .line { display: block; }
.hero h1 em { font-style: italic; color: var(--flax); }
.hero h1 .outline { color: transparent; -webkit-text-stroke: 1.5px rgba(255,255,255,.75); }
.hero .lede {
  color: rgba(255,255,255,.85); max-width: 480px; margin-top: 30px;
  font-size: clamp(15px, 1.4vw, 17px); line-height: 1.85;
}
.hero-cta { display: flex; gap: 16px; margin-top: 36px; flex-wrap: wrap; }
.hero .stats {
  margin-top: 52px; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.2);
  display: flex; gap: 44px; flex-wrap: wrap;
}
.hero .stats div { font-family: var(--grotesk); font-size: 12px; letter-spacing: 0.18em; color: rgba(255,255,255,.7); text-transform: uppercase; }
.hero .stats b { display: block; font-family: var(--serif); font-size: 30px; font-weight: 500; color: #fff; letter-spacing: 0; line-height: 1.2; }

/* 竖排文字（右侧） */
.hero .v-text {
  position: absolute; right: 34px; top: 50%; transform: translateY(-50%) rotate(180deg);
  writing-mode: vertical-rl; z-index: 3;
  font-family: var(--grotesk); font-size: 11px; letter-spacing: 0.42em; text-transform: uppercase;
  color: rgba(255,255,255,.75);
}
.hero .v-text b { color: var(--flax); font-weight: 500; }

/* 旋转印章（CTA 装饰） */
.stamp { position: absolute; right: 8%; bottom: 12%; z-index: 3; width: 132px; height: 132px; animation: spin 18s linear infinite; }
@media (max-width: 860px) { .stamp { display: none; } }
@keyframes spin { to { transform: rotate(360deg); } }
.stamp circle { fill: rgba(20,20,20,.25); }
.stamp path { fill: #fff; }

/* Hero 底部跑马灯 */
.hero-marquee {
  position: absolute; left: 0; right: 0; bottom: 0; z-index: 3;
  border-top: 1px solid rgba(255,255,255,.16);
}
.hero-marquee .announce-track span { color: rgba(255,255,255,.85); font-size: 10.5px; }
.hero-marquee .announce-track span b { color: var(--flax); }

/* ============================================================
   区块标题 —— 杂志式
   ============================================================ */
.sec-head { position: relative; margin-bottom: 56px; }
.sec-head .index {
  position: absolute; right: 0; top: -70px; z-index: 0;
  font-family: var(--serif); font-style: italic; font-size: clamp(120px, 18vw, 230px);
  line-height: 1; color: var(--ink); opacity: .05; pointer-events: none;
}
.sec-head h2 { font-size: clamp(40px, 5.6vw, 72px); max-width: 11em; margin-top: 18px; position: relative; z-index: 1; }
.sec-head h2 em { font-style: italic; color: var(--gray-400); }
.sec-head h2 .u { position: relative; }
.sec-head h2 .u::after { content: ""; position: absolute; left: 0; right: 0; bottom: 6px; height: 8px; background: var(--flax); opacity: .4; z-index: -1; }
.sec-head .sub { max-width: 460px; font-size: 14.5px; color: var(--gray-400); margin-top: 20px; position: relative; z-index: 1; }
.sec-head--center { text-align: center; }
.sec-head--center h2 { margin-left: auto; margin-right: auto; }
.sec-head--center .sub { margin-left: auto; margin-right: auto; }

/* ============================================================
   数字带（Hero 下）
   ============================================================ */
.stats-band { border-bottom: 1px solid var(--line); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.stat-cell { padding: 44px 32px 40px; border-left: 1px solid var(--line); position: relative; }
.stat-cell:first-child { border-left: 0; }
.stat-cell .n { font-family: var(--serif); font-size: clamp(52px, 6vw, 76px); line-height: 1; color: var(--ink); }
.stat-cell .n sup { font-size: .45em; color: var(--gray-400); }
.stat-cell .k { font-family: var(--grotesk); font-size: 11px; letter-spacing: 0.28em; text-transform: uppercase; color: var(--gray-400); margin-top: 12px; }
.stat-cell::after { content: ""; position: absolute; left: 32px; right: 32px; bottom: 0; height: 3px; background: var(--ink); transform: scaleX(0); transform-origin: left; transition: transform .5s ease; }
.stat-cell:hover::after { transform: scaleX(1); }

/* ============================================================
   品类 —— 不对称网格
   ============================================================ */
.cat-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 18px; }
.cat-card { position: relative; overflow: hidden; display: block; aspect-ratio: 3/3.6; background: var(--bg-mid); }
.cat-card--wide { grid-column: span 3; aspect-ratio: 3/2.2; }
.cat-card--narrow { grid-column: span 3; }
.cat-card:nth-child(2) { grid-column: span 3; }
.cat-card:nth-child(3) { grid-column: span 3; aspect-ratio: 3/2.2; }
.cat-card:nth-child(4) { grid-column: span 3; }
.cat-card img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform .7s cubic-bezier(.16,1,.3,1); }
.cat-card:hover img { transform: scale(1.06); }
.cat-card::after {
  content: ""; position: absolute; inset: 0; background: var(--flax);
  mix-blend-mode: multiply; opacity: 0; transition: opacity .5s ease; pointer-events: none;
}
.cat-card:hover::after { opacity: .5; }
.cat-card .idx {
  position: absolute; top: 18px; left: 20px; z-index: 2;
  font-family: var(--grotesk); font-size: 11px; letter-spacing: 0.24em; color: rgba(255,255,255,.85);
  background: rgba(20,20,20,.4); padding: 6px 12px; backdrop-filter: blur(4px);
}
.cat-card .cap { position: absolute; inset: auto 0 0 0; z-index: 2; padding: 140px 26px 26px; background: linear-gradient(180deg, transparent, rgba(0,0,0,.82)); color: #fff; }
.cat-card .cap h3 { color: #fff; font-size: clamp(24px, 2.6vw, 34px); }
.cat-card .cap p { font-size: 13px; color: rgba(255,255,255,.78); margin-top: 6px; max-width: 90%; }
.cat-card .cap .more {
  display: inline-flex; align-items: center; gap: 10px; margin-top: 16px;
  font-family: var(--grotesk); font-size: 11px; letter-spacing: 0.24em; text-transform: uppercase; color: #fff; font-weight: 500;
  border-bottom: 1px solid var(--flax); padding-bottom: 6px;
}
.cat-card .cap .more .arr { transition: transform .3s; }
.cat-card:hover .cap .more .arr { transform: translateX(6px); }

/* ============================================================
   双栏（Why Us）
   ============================================================ */
.split { display: grid; grid-template-columns: 1.08fr .92fr; gap: clamp(44px, 7vw, 110px); align-items: center; }
.split--rev { direction: rtl; }
.split--rev > * { direction: ltr; }
.split .visual { position: relative; overflow: hidden; }
.split .visual::after { content: ""; position: absolute; inset: 0; border: 1px solid rgba(20,20,20,.14); }
.split .visual .tick {
  position: absolute; right: 20px; bottom: 20px; z-index: 2; background: #fff; color: var(--ink);
  font-family: var(--grotesk); font-size: 10px; letter-spacing: 0.24em; text-transform: uppercase;
  padding: 10px 16px;
}
.split .visual img { width: 100%; height: 100%; object-fit: cover; transition: transform .8s cubic-bezier(.16,1,.3,1); }
.split .visual:hover img { transform: scale(1.04); }
.split h2 { font-size: clamp(34px, 4.4vw, 58px); margin: 18px 0 24px; }
.split p { font-size: 15px; margin-bottom: 16px; }
.split .lead-quote {
  font-family: var(--serif); font-style: italic; font-size: clamp(20px, 2.2vw, 26px);
  color: var(--ink); line-height: 1.5; border-left: 3px solid var(--flax); padding-left: 24px; margin: 26px 0;
}
.split ul.check li { padding-left: 30px; position: relative; font-size: 14.5px; margin-bottom: 12px; }
.split ul.check li::before {
  content: "01"; position: absolute; left: 0; top: 1px;
  font-family: var(--grotesk); font-size: 10px; letter-spacing: .14em; color: var(--flax);
}

/* ============================================================
   步骤条
   ============================================================ */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--ink); }
.step { padding: 34px 30px 20px 0; border-right: 1px solid var(--line); margin-right: 30px; position: relative; }
.step:last-child { border-right: 0; margin-right: 0; }
.step .n { font-family: var(--serif); font-style: italic; font-size: 58px; line-height: 1; color: var(--ink); opacity: .16; transition: opacity .3s, transform .3s; }
.step:hover .n { opacity: .9; transform: translateX(6px); color: var(--flax); }
.step h3 { font-size: 22px; margin: 14px 0 8px; }
.step p { font-size: 13.5px; }

/* ============================================================
   产品网格 —— hover 亚麻上色
   ============================================================ */
.prod-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.prod-card { display: block; }
.prod-card .thumb { position: relative; overflow: hidden; aspect-ratio: 1/1; background: var(--bg-mid); }
.prod-card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .7s cubic-bezier(.16,1,.3,1); }
.prod-card:hover .thumb img { transform: scale(1.05); }
.prod-card .thumb::after {
  content: ""; position: absolute; inset: 0; background: var(--flax);
  mix-blend-mode: multiply; opacity: 0; transition: opacity .5s ease; pointer-events: none;
}
.prod-card:hover .thumb::after { opacity: .55; }
.prod-card .thumb .tag {
  position: absolute; top: 14px; left: 14px; z-index: 2;
  font-family: var(--grotesk); font-size: 10px; font-weight: 500; letter-spacing: 0.2em; text-transform: uppercase;
  background: #fff; color: var(--ink); padding: 6px 11px;
}
.prod-card .body { padding-top: 16px; margin-top: 16px; border-top: 1px solid var(--line); display: flex; justify-content: space-between; align-items: flex-end; gap: 12px; }
.prod-card .body h3 { font-family: var(--sans); font-size: 15px; font-weight: 600; color: var(--ink); letter-spacing: 0; line-height: 1.4; }
.prod-card .body .spec { font-size: 12.5px; color: var(--gray-400); margin-top: 4px; }
.prod-card .body .link {
  font-family: var(--grotesk); font-size: 11px; font-weight: 500; letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--ink); white-space: nowrap; border-bottom: 2px solid transparent; padding-bottom: 3px;
}
.prod-card:hover .body .link { border-color: var(--flax); }

/* ============================================================
   深色 CTA —— 大品牌字
   ============================================================ */
.cta-band { background: var(--bg-dark); text-align: center; padding: clamp(90px, 12vw, 150px) 0 0; position: relative; overflow: hidden; }
.cta-band h2 { color: #fff; font-size: clamp(44px, 7vw, 100px); max-width: 12em; margin: 18px auto 20px; }
.cta-band h2 em { font-style: italic; color: rgba(255,255,255,.45); }
.cta-band h2 .u { position: relative; }
.cta-band h2 .u::after { content: ""; position: absolute; left: 0; right: 0; bottom: 8px; height: 10px; background: var(--flax); opacity: .55; z-index: -1; }
.cta-band p { color: #A9A9A0; max-width: 500px; margin: 0 auto; font-size: 15px; }
.cta-band .cta-row { display: flex; gap: 16px; justify-content: center; margin-top: 40px; flex-wrap: wrap; }
.cta-mast {
  margin-top: clamp(60px, 8vw, 110px); padding: 26px 0 8px;
  font-family: var(--serif); font-size: clamp(60px, 13vw, 200px); line-height: .8;
  color: rgba(255,255,255,.08); letter-spacing: -0.02em; white-space: nowrap;
  border-top: 1px solid rgba(255,255,255,.12); user-select: none;
}
.cta-mast em { font-style: italic; color: rgba(200,176,144,.12); }

/* ============================================================
   面包屑 / 页头
   ============================================================ */
.crumb { padding: 28px 0 0; font-family: var(--grotesk); font-size: 11px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--gray-400); }
.crumb a:hover { color: var(--ink); }
.crumb .sep { margin: 0 10px; color: var(--line-2); }
.page-hero { padding: clamp(60px, 9vw, 110px) 0 clamp(40px, 6vw, 70px); position: relative; }
.page-hero h1 { font-size: clamp(44px, 6.4vw, 84px); max-width: 13em; margin-top: 20px; }
.page-hero h1 em { font-style: italic; color: var(--gray-400); }
.page-hero .lead { font-size: 16.5px; max-width: 720px; margin-top: 24px; line-height: 1.85; }
.page-hero .lead b { color: var(--ink); }
.page-hero .p-index {
  position: absolute; right: var(--pad); top: 30px;
  font-family: var(--serif); font-style: italic; font-size: clamp(110px, 16vw, 200px);
  line-height: 1; color: var(--ink); opacity: .05; pointer-events: none; z-index: -1;
}

/* ============================================================
   规格表 / 混纺卡 / 表单 / 联系卡 / 博客 / 文章（继承布局，视觉升级）
   ============================================================ */
.spec-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.spec-table th {
  text-align: left; font-family: var(--grotesk); font-size: 10.5px; font-weight: 500;
  letter-spacing: 0.26em; text-transform: uppercase; color: var(--gray-400);
  padding: 16px 20px; border-bottom: 2px solid var(--ink);
}
.spec-table td { padding: 15px 20px; border-bottom: 1px solid var(--line); color: var(--gray-600); }
.spec-table td:first-child { font-weight: 600; color: var(--ink); white-space: nowrap; }
.spec-table tr:hover td { background: var(--bg-warm); }

.blend-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.blend-card { border: 1px solid var(--line); padding: 32px 30px; background: #fff; position: relative; transition: all .3s ease; }
.blend-card::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: var(--flax); transform: scaleX(0); transform-origin: left; transition: transform .4s ease; }
.blend-card:hover { border-color: var(--ink); transform: translateY(-4px); box-shadow: 0 20px 44px rgba(0,0,0,.07); }
.blend-card:hover::before { transform: scaleX(1); }
.blend-card h3 { font-size: 22px; }
.blend-card .ratio { font-family: var(--grotesk); font-size: 12px; letter-spacing: .18em; color: var(--gray-400); margin: 6px 0 14px; }
.blend-card ul li { font-size: 13.5px; padding-left: 20px; position: relative; margin-bottom: 8px; }
.blend-card ul li::before { content: "—"; position: absolute; left: 0; color: var(--flax); }

.pdp { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(40px, 5vw, 76px); padding: 46px 0 var(--sec); }
.pdp .gallery { position: relative; }
.pdp .gallery::after { content: ""; position: absolute; inset: 0; border: 1px solid rgba(20,20,20,.12); pointer-events: none; }
.pdp h1 { font-size: clamp(34px, 4.4vw, 54px); margin-top: 16px; }
.pdp .short { font-size: 15.5px; margin-top: 18px; line-height: 1.85; }
.pdp .price-note { font-family: var(--grotesk); font-size: 11px; letter-spacing: .18em; text-transform: uppercase; color: var(--gray-400); margin-top: 12px; }
.pdp .btn-row { display: flex; gap: 14px; margin-top: 30px; flex-wrap: wrap; }
.pdp .promise { margin-top: 28px; padding: 20px 24px; background: var(--bg-warm); border-left: 3px solid var(--flax); font-size: 14px; }
.pdp .promise b { color: var(--ink); }
.pdp .spec-block { margin-top: 46px; }
.pdp .spec-block h2 { font-size: 30px; margin-bottom: 20px; }

.form { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form .full { grid-column: 1 / -1; }
.form label { display: block; font-family: var(--grotesk); font-size: 10.5px; font-weight: 500; letter-spacing: 0.22em; text-transform: uppercase; color: var(--gray-400); margin-bottom: 9px; }
.form label b { color: var(--ink); }
.form input, .form select, .form textarea {
  width: 100%; padding: 14px 16px; border: 1px solid var(--line-2); border-radius: 0;
  font-family: var(--sans); font-size: 14.5px; color: var(--ink); background: #fff; transition: border-color .2s, box-shadow .2s; appearance: none;
}
.form select { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%238A8A82'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 16px center; }
.form input:focus, .form select:focus, .form textarea:focus { outline: none; border-color: var(--ink); box-shadow: inset 0 -2px 0 var(--flax); }
.form textarea { min-height: 120px; resize: vertical; }
.form .hint { font-size: 12.5px; color: var(--gray-400); margin-top: 6px; }
.form .hint.warn { color: #8A6D3B; }
.form .submit-row { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.form-note { font-size: 13.5px; color: var(--gray-400); margin-top: 24px; line-height: 1.8; }
.form-note b { color: var(--ink); }

.contact-cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.contact-card { border: 1px solid var(--line); padding: 30px 26px; position: relative; transition: all .3s; }
.contact-card:hover { border-color: var(--ink); transform: translateY(-3px); }
.contact-card .k { font-family: var(--grotesk); font-size: 10.5px; letter-spacing: 0.24em; text-transform: uppercase; color: var(--gray-400); font-weight: 500; }
.contact-card .v { font-family: var(--serif); font-size: 22px; color: var(--ink); margin-top: 10px; line-height: 1.4; }
.contact-card .v small { font-family: var(--sans); font-size: 12px; color: var(--gray-400); }

.blog-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.post-card { display: block; }
.post-card .thumb { overflow: hidden; aspect-ratio: 3/2; background: var(--bg-mid); position: relative; }
.post-card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .7s cubic-bezier(.16,1,.3,1); }
.post-card:hover .thumb img { transform: scale(1.05); }
.post-card .thumb::after { content: ""; position: absolute; inset: 0; background: var(--flax); mix-blend-mode: multiply; opacity: 0; transition: opacity .5s; }
.post-card:hover .thumb::after { opacity: .5; }
.post-card .meta { font-family: var(--grotesk); font-size: 10.5px; letter-spacing: 0.22em; text-transform: uppercase; color: var(--gray-400); margin-top: 18px; }
.post-card h3 { font-family: var(--sans); font-size: 17px; font-weight: 600; letter-spacing: 0; margin-top: 10px; line-height: 1.5; }
.post-card:hover h3 { text-decoration: underline; text-decoration-color: var(--flax); text-underline-offset: 5px; }
.post-card .ex { font-size: 13.5px; color: var(--gray-600); margin-top: 8px; }

.article { max-width: 780px; margin: 0 auto; padding: clamp(44px, 6vw, 76px) 0 var(--sec); }
.article .meta { font-family: var(--grotesk); font-size: 11px; letter-spacing: 0.24em; text-transform: uppercase; color: var(--gray-400); }
.article h1 { font-size: clamp(36px, 5vw, 58px); margin: 20px 0 12px; }
.article .lede { font-size: 19px; line-height: 1.8; color: var(--gray-600); font-family: var(--serif); font-style: italic; margin-bottom: 38px; }
.article h2 { font-size: 30px; margin: 52px 0 16px; position: relative; }
.article h2::before { content: ""; position: absolute; left: -24px; top: 10px; width: 3px; height: 24px; background: var(--flax); }
.article p { margin-bottom: 18px; font-size: 15.5px; line-height: 1.95; }
.article ul { margin-bottom: 20px; }
.article ul li { padding-left: 24px; position: relative; margin-bottom: 10px; font-size: 15px; }
.article ul li::before { content: "·"; position: absolute; left: 4px; top: -2px; font-size: 24px; color: var(--flax); }
.article blockquote { border-left: 3px solid var(--flax); padding: 8px 0 8px 26px; margin: 32px 0; font-family: var(--serif); font-style: italic; font-size: 20px; color: var(--ink); }
.article .tip { background: var(--bg-warm); border: 1px solid var(--line); border-left: 3px solid var(--flax); padding: 22px 26px; font-size: 14px; margin: 28px 0; }
.article .tip b { color: var(--ink); }

/* ============================================================
   页脚 —— 大品牌字
   ============================================================ */
.site-footer { background: var(--bg-dark); color: #9E9E96; font-size: 13.5px; }
.footer-mast {
  padding: clamp(50px, 7vw, 90px) var(--pad) 10px; text-align: center;
  font-family: var(--serif); font-size: clamp(56px, 11vw, 168px); line-height: .85;
  color: rgba(255,255,255,.09); letter-spacing: -0.02em; user-select: none;
}
.footer-mast em { font-style: italic; color: rgba(200,176,144,.14); }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 44px; padding: 40px 0 52px; }
.footer-grid h4 { color: #fff; font-family: var(--grotesk); font-size: 11px; font-weight: 500; letter-spacing: 0.26em; text-transform: uppercase; margin-bottom: 20px; }
.footer-grid a { display: block; padding: 5px 0; color: #9E9E96; }
.footer-grid a:hover { color: var(--flax); }
.footer-grid .brand p { margin-top: 14px; line-height: 1.8; max-width: 300px; }
.footer-grid .contact li { padding: 4px 0; display: flex; gap: 10px; }
.footer-grid .contact .k { color: #5E5E56; min-width: 92px; }
.footer-bottom { border-top: 1px solid #2C2C29; padding: 22px 0; display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap; font-size: 12.5px; color: #6E6E66; }
.footer-bottom a:hover { color: var(--flax); }

/* ---- WhatsApp 浮动按钮 ---- */
.wa-float {
  position: fixed; right: 26px; bottom: 26px; z-index: 200;
  display: flex; align-items: center; gap: 10px;
  background: var(--ink); color: #fff; padding: 15px 22px;
  border-radius: 999px; font-family: var(--grotesk); font-size: 12px; font-weight: 500; letter-spacing: 0.08em;
  box-shadow: 0 12px 34px rgba(0,0,0,.28); transition: all .25s ease;
}
.wa-float:hover { background: var(--ink-2); transform: translateY(-3px); }
.wa-float svg { width: 19px; height: 19px; fill: #fff; }

/* ---- 占位提示条 ---- */
.placeholder-note { display: flex; gap: 12px; align-items: flex-start; background: var(--bg-warm); border: 1px dashed var(--line-2); padding: 12px 18px; font-size: 12.5px; color: var(--gray-400); margin-top: 18px; line-height: 1.6; }
.placeholder-note b { color: var(--ink); }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1024px) {
  .cat-grid, .cat-card:nth-child(2), .cat-card:nth-child(3), .cat-card:nth-child(4) { grid-template-columns: repeat(2, 1fr); }
  .cat-card, .cat-card--wide, .cat-card:nth-child(3) { grid-column: span 3; aspect-ratio: 3/2.6; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-cell { border-left: 0; border-top: 1px solid var(--line); }
  .stat-cell:nth-child(-n+2) { border-top: 0; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .step { border-right: 0; margin-right: 0; padding-right: 30px; }
  .prod-grid, .blog-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-cards { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 720px) {
  .nav { height: 66px; }
  .nav-menu {
    position: fixed; top: 0; right: -100%; width: 84%; max-width: 380px; height: 100vh;
    background: #fff; flex-direction: column; align-items: flex-start; gap: 0;
    padding: 92px 38px 40px; transition: right .32s ease; box-shadow: -24px 0 70px rgba(0,0,0,.14); overflow-y: auto;
  }
  .nav-menu.open { right: 0; }
  .nav-menu > li { width: 100%; border-bottom: 1px solid var(--line); }
  .nav-menu > li > a { display: block; padding: 17px 0; font-size: 14px; }
  .nav-menu > li > a::after { display: none; }
  .drop { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; border: 0; padding: 0 0 14px; min-width: 0; }
  .drop a { padding: 11px 0; font-size: 13.5px; }
  .nav-cta .btn { display: none; }
  .burger { display: block; z-index: 300; }
  .burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .burger.open span:nth-child(2) { opacity: 0; }
  .burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .hero { min-height: 600px; }
  .hero .v-text { display: none; }
  .hero .stats { gap: 26px; }
  .split { grid-template-columns: 1fr; }
  .split .visual { order: -1; }
  .blend-grid, .pdp { grid-template-columns: 1fr; }
  .form { grid-template-columns: 1fr; }
  .sec-head .index { font-size: 110px; top: -50px; }
  .wa-float { padding: 14px; }
  .wa-float .wa-txt { display: none; }
}

@media (max-width: 480px) {
  .cat-grid, .prod-grid, .blog-grid, .contact-cards { grid-template-columns: 1fr; }
  .cat-card, .cat-card:nth-child(2), .cat-card:nth-child(3), .cat-card:nth-child(4) { grid-column: span 6; aspect-ratio: 3/3.4; }
  .steps, .stats-grid { grid-template-columns: 1fr; }
  .stat-cell:nth-child(2) { border-top: 1px solid var(--line); }
}

/* ============================================================
   V3 —— 动效加强层（自定义光标 / 字体切换器 / 逐字动画 / 磁吸按钮）
   ============================================================ */

/* ---- 自定义光标（桌面） ---- */
.cursor-dot, .cursor-ring {
  position: fixed; top: 0; left: 0; pointer-events: none; z-index: 400;
  border-radius: 50%; will-change: transform;
}
.cursor-dot {
  width: 7px; height: 7px; background: var(--flax);
  transform: translate(-50%, -50%);
}
.cursor-ring {
  width: 38px; height: 38px; border: 1.5px solid var(--ink);
  mix-blend-mode: difference; transform: translate(-50%, -50%);
  transition: width .3s ease, height .3s ease, border-color .3s ease, background .3s ease;
}
body.cursor-hover .cursor-ring { width: 64px; height: 64px; border-color: var(--flax); background: rgba(200,176,144,.08); }
body.cursor-click .cursor-ring { width: 26px; height: 26px; }
@media (pointer: coarse) { .cursor-dot, .cursor-ring { display: none; } }
@media (prefers-reduced-motion: reduce) { .cursor-dot, .cursor-ring { display: none; } }

/* 字体方案定义 —— 全局标题字体切换（body[data-font]） */
body[data-font="playfair"] { --serif: "Playfair Display", Georgia, serif; }
body[data-font="playfair"] h1, body[data-font="playfair"] h2, body[data-font="playfair"] h3 { font-weight: 600; letter-spacing: -0.02em; }

/* ---- 返回顶部 ---- */
.to-top {
  position: fixed; right: 26px; bottom: 92px; z-index: 300;
  width: 44px; height: 44px; border-radius: 50%;
  background: #fff; border: 1px solid var(--ink); color: var(--ink);
  display: grid; place-items: center; cursor: pointer;
  opacity: 0; visibility: hidden; transform: translateY(10px);
  transition: all .3s ease; font-size: 15px;
}
.to-top.show { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { background: var(--ink); color: var(--flax); }

/* ---- 信任背书条 ---- */
.accred { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.accred-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.accred-item {
  display: flex; align-items: center; gap: 16px; padding: 26px 28px;
  border-left: 1px solid var(--line);
}
.accred-item:first-child { border-left: 0; }
.accred-item .ic {
  width: 42px; height: 42px; flex: none; border: 1px solid var(--line-2); border-radius: 50%;
  display: grid; place-items: center; font-family: var(--grotesk); font-size: 10px;
  letter-spacing: .08em; color: var(--ink); text-align: center; line-height: 1.1;
}
.accred-item .tx { font-size: 12px; color: var(--gray-600); line-height: 1.5; }
.accred-item .tx b { display: block; font-family: var(--grotesk); font-size: 11px; letter-spacing: .14em; text-transform: uppercase; color: var(--ink); }

/* ---- 产品卡规格徽章（图上角） ---- */
.prod-card .thumb .spec-badge {
  position: absolute; right: 14px; bottom: 14px; z-index: 2;
  font-family: var(--grotesk); font-size: 10px; letter-spacing: .12em;
  color: #fff; background: rgba(20,20,20,.55); backdrop-filter: blur(3px);
  padding: 5px 10px; border: 1px solid rgba(255,255,255,.25);
}

/* ---- FAQ 手风琴 ---- */
.faq { max-width: 860px; margin: 0 auto; }
.faq details {
  border-bottom: 1px solid var(--line); position: relative;
}
.faq details:first-of-type { border-top: 1px solid var(--line); }
.faq summary {
  list-style: none; cursor: pointer; padding: 26px 60px 26px 4px;
  display: flex; justify-content: space-between; align-items: center; gap: 20px;
  font-family: var(--serif); font-size: clamp(19px, 2vw, 24px); color: var(--ink);
  transition: color .2s;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary:hover { color: var(--flax); }
.faq summary::after {
  content: "+"; position: absolute; right: 6px; top: 50%;
  transform: translateY(-50%); font-family: var(--sans); font-size: 26px; font-weight: 300;
  color: var(--gray-400); transition: transform .3s ease;
}
.faq details[open] summary::after { content: "–"; }
.faq details .ans {
  padding: 0 60px 28px 4px; font-size: 14.5px; color: var(--gray-600); line-height: 1.9;
}
.faq details .ans b { color: var(--ink); }
.faq .faq-cta { text-align: center; margin-top: 44px; font-size: 14px; color: var(--gray-400); }
.faq .faq-cta a { color: var(--ink); border-bottom: 1px solid var(--flax); }

/* ---- 表单增强区（询盘类型选择） ---- */
.form .req-type { display: flex; gap: 10px; flex-wrap: wrap; }
.form .req-type label.chip {
  display: inline-flex; align-items: center; gap: 8px; margin: 0;
  font-family: var(--grotesk); font-size: 11px; letter-spacing: .1em; text-transform: uppercase;
  color: var(--gray-600); border: 1px solid var(--line-2); padding: 9px 16px; cursor: pointer;
  transition: all .2s;
}
.form .req-type input { position: absolute; opacity: 0; pointer-events: none; }
.form .req-type label.chip:has(input:checked) {
  background: var(--ink); color: #fff; border-color: var(--ink);
}
@media (max-width: 480px) { .accred-grid { grid-template-columns: 1fr 1fr; } .accred-item { border-left: 0; border-top: 1px solid var(--line); } }