/* ==========================================================================
   南泽洁具官网 · 样式
   设计系统：白 #FFFFFF / 暖灰 #F6F5F2 / 墨黑 #0E1416 / 铜金 #9C7A4A
   字体：Noto Sans SC（无网络字体，走系统栈，国内加载零延迟）
   ========================================================================== */

:root {
  --white: #ffffff;
  --alt: #f6f5f2;
  --dark: #0e1416;
  --dark-2: #22292e;
  --accent: #9c7a4a;
  --ink: #12171a;
  --ink-2: #5b666b;
  --ink-3: #98a1a5;
  --line: #e7e5e0;
  --line-dark: rgba(255, 255, 255, 0.12);
  --pad: 120px;
  --r: 2px;
  --font: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--font);
  font-weight: 300;
  color: var(--ink);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
em { font-style: normal; }
button { font-family: inherit; }

.kicker {
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--accent);
  text-transform: uppercase;
  font-weight: 400;
}

h1, h2 { font-weight: 300; letter-spacing: 0.01em; margin: 0; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 52px;
  padding: 0 30px;
  border: 0;
  border-radius: var(--r);
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 0.03em;
  cursor: pointer;
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}
.btn-dark { background: var(--ink); color: #fff; }
.btn-dark:hover { background: #000; }
.btn-ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); }
.btn-ghost:hover { border-color: var(--ink); }
.btn-light { background: #fff; color: var(--ink); }
.btn-light:hover { background: var(--alt); }
.btn-sm { height: 40px; padding: 0 20px; font-size: 13px; }
.btn-block { width: 100%; }

.link-arrow { font-size: 13px; color: var(--ink-2); transition: color 0.18s; }
.link-arrow span { display: inline-block; margin-left: 6px; transition: transform 0.18s; }
.link-arrow:hover { color: var(--ink); }
.link-arrow:hover span { transform: translateX(4px); }

/* ---------- 页头 ---------- */
.hd {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--line);
}
.hd-in {
  height: 84px;
  padding: 0 var(--pad);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}
.brand { display: flex; align-items: baseline; gap: 12px; }
.brand-cn { font-size: 18px; font-weight: 500; letter-spacing: 0.08em; }
.brand-en { font-size: 10px; letter-spacing: 0.28em; color: var(--ink-3); }

.nav { display: flex; gap: 34px; font-size: 13px; }
.nav a { color: var(--ink); opacity: 0.86; padding: 6px 0; border-bottom: 1px solid transparent; }
.nav a:hover { opacity: 1; }
.nav a.on { border-bottom-color: var(--ink); }

.hd-act { display: flex; align-items: center; gap: 22px; }
.hd-tel { font-size: 13px; color: var(--ink-2); letter-spacing: 0.02em; }

.hd-menu { display: none; }

.hd-drawer { display: none; }

/* ---------- 首屏 ---------- */
.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 720px;
}
.hero-copy {
  padding: 96px var(--pad) 72px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  max-width: 720px;
}
.hero-copy h1 {
  font-size: clamp(30px, 2.9vw, 42px);
  line-height: 1.52;
  margin: 26px 0 0;
}
.hero-p {
  font-size: 14px;
  line-height: 2;
  color: var(--ink-2);
  max-width: 400px;
  margin: 22px 0 0;
}
.hero-act { display: flex; align-items: center; gap: 28px; margin-top: 40px; }
.hero-note {
  margin-top: 56px;
  font-size: 12px;
  color: var(--ink-3);
  display: flex;
  align-items: center;
  gap: 12px;
  letter-spacing: 0.04em;
}
.dash { width: 26px; height: 1px; background: var(--line); display: inline-block; }

.hero-pic {
  background-size: cover;
  background-position: center;
  min-height: 520px;
}

/* ---------- 数据条 ---------- */
.stats { background: var(--alt); }
.stats-in {
  padding: 34px var(--pad);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.stat-n { font-size: 26px; font-weight: 300; letter-spacing: 0.02em; }
.stat-n em { font-size: 12px; margin-left: 6px; color: var(--ink-2); }
.stat-l { font-size: 12px; color: var(--ink-3); margin-top: 8px; letter-spacing: 0.04em; }
.stats-line { width: 1px; height: 34px; background: var(--line); }

/* ---------- 通用区块 ---------- */
.sec { padding: 104px var(--pad); }
.sec-alt { background: var(--alt); }
.sec-dark { background: var(--dark); color: #fff; }
.sec-dark .kicker { color: var(--accent); }
.sec-dark .link-arrow { color: rgba(255, 255, 255, 0.6); }
.sec-dark .link-arrow:hover { color: #fff; }

.sec-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 40px;
  margin-bottom: 48px;
}
.sec-head h2 { font-size: clamp(24px, 2.1vw, 30px); margin-top: 16px; }

/* ---------- 四个系列 ---------- */
.grid4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }

.card-series { display: block; }
.card-pic {
  height: 352px;
  background-size: cover;
  background-position: center;
  border-radius: var(--r);
  transition: opacity 0.25s;
}
.card-series:hover .card-pic { opacity: 0.9; }
.card-t { font-size: 16px; font-weight: 400; margin-top: 20px; }
.card-d { font-size: 12px; line-height: 1.9; color: var(--ink-3); margin-top: 10px; }

/* ---------- 热销（深色） ---------- */
.best { display: grid; grid-template-columns: 520px 1fr; gap: 80px; align-items: start; }
.best-pic {
  height: 520px;
  background-size: cover;
  background-position: center;
  border-radius: var(--r);
}
.best-t { font-size: 16px; margin-top: 22px; font-weight: 400; }
.best-d { font-size: 12px; color: rgba(255, 255, 255, 0.5); margin-top: 10px; line-height: 1.9; }

.best-list { display: flex; flex-direction: column; justify-content: space-between; min-height: 520px; }
.best-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 30px 0;
  border-top: 1px solid var(--line-dark);
  transition: padding 0.2s;
}
.best-row:last-child { border-bottom: 1px solid var(--line-dark); }
.best-row:hover { padding-left: 10px; }
.best-left { display: flex; flex-direction: column; gap: 8px; }
.best-name { font-size: 15px; }
.best-code { font-size: 12px; color: rgba(255, 255, 255, 0.4); letter-spacing: 0.06em; }
.best-price { font-size: 13px; color: var(--accent); white-space: nowrap; }

/* ---------- 品质与工艺 ---------- */
.quality { display: grid; grid-template-columns: 520px 1fr; gap: 80px; align-items: start; }
.q-pic { min-height: 520px; background-size: cover; background-position: center; border-radius: var(--r); }
.q-body h2 { font-size: clamp(24px, 2.1vw, 30px); margin: 16px 0 0; }
.q-list { margin-top: 34px; display: flex; flex-direction: column; gap: 30px; }
.q-no { font-size: 11px; color: var(--accent); letter-spacing: 0.16em; }
.q-t { font-size: 15px; font-weight: 500; margin-top: 12px; }
.q-d { font-size: 13px; line-height: 1.95; color: var(--ink-2); margin-top: 8px; }

/* ---------- 案例卡 ---------- */
.card-case { display: block; }
.case-pic {
  height: 440px;
  background-size: cover;
  background-position: center;
  border-radius: var(--r);
  transition: opacity 0.25s;
}
.card-case:hover .case-pic { opacity: 0.9; }
.case-t { font-size: 15px; margin-top: 18px; }
.case-m { font-size: 12px; color: var(--ink-3); margin-top: 8px; letter-spacing: 0.03em; }

/* ---------- 询价 ---------- */
.inquiry { display: grid; grid-template-columns: 420px 1fr; gap: 80px; align-items: start; }
.inq-copy h2 { font-size: clamp(24px, 2.4vw, 34px); line-height: 1.6; margin-top: 20px; }
.inq-copy > p { font-size: 13px; color: var(--ink-2); line-height: 2; margin-top: 18px; max-width: 340px; }
.inq-steps { margin-top: 34px; display: flex; flex-direction: column; gap: 14px; }
.inq-step { display: flex; gap: 14px; font-size: 13px; color: var(--ink-2); }
.inq-step span { color: var(--accent); font-size: 11px; letter-spacing: 0.1em; padding-top: 3px; }
.inq-contact { margin-top: 40px; font-size: 12px; color: var(--ink-3); line-height: 2.2; letter-spacing: 0.03em; }

.inquiry-page { padding-top: 0; }

/* 表单 */
.form {
  background: var(--alt);
  padding: 40px 44px 34px;
  border-radius: var(--r);
}
.form-h { font-size: 20px; font-weight: 400; }
.form-sub { font-size: 12px; color: var(--ink-3); margin: 12px 0 28px; line-height: 1.8; }
.form-err {
  font-size: 12px;
  color: #a4341f;
  background: #fdf1ee;
  border-left: 2px solid #c2492f;
  padding: 10px 14px;
  margin-bottom: 18px;
}
.field { display: block; margin-bottom: 22px; }
.field > span { display: block; font-size: 11px; color: var(--ink-3); letter-spacing: 0.06em; margin-bottom: 8px; }
.field input {
  width: 100%;
  border: 0;
  border-bottom: 1px solid var(--line);
  background: transparent;
  padding: 10px 0 12px;
  font-size: 14px;
  font-family: inherit;
  font-weight: 300;
  color: var(--ink);
  border-radius: 0;
  outline: none;
  transition: border-color 0.2s;
}
.field input::placeholder { color: #b9bfc2; }
.field input:focus { border-bottom-color: var(--ink); }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }
.form-foot { font-size: 11px; color: var(--ink-3); text-align: center; margin-top: 18px; }

.form-done { text-align: left; }
.done-mark {
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--ink); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; margin-bottom: 24px;
}

/* ---------- 页脚 ---------- */
.ft { background: var(--dark); color: #fff; }
.ft-in { padding: 72px var(--pad) 34px; }
.ft-top { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; }
.ft-logo { font-size: 26px; letter-spacing: 0.06em; }
.ft-en { font-size: 10px; letter-spacing: 0.3em; color: var(--accent); margin-top: 12px; }
.ft-tag { font-size: 12px; color: rgba(255, 255, 255, 0.45); margin-top: 22px; line-height: 1.9; }
/* 页脚的地址/电话/邮箱走真实文字，百度判断「是不是一家真公司」会看这些 */
.ft-contact { font-size: 12px; color: rgba(255, 255, 255, 0.55); line-height: 2; margin-top: 14px; }
.ft-contact a { color: rgba(255, 255, 255, 0.55); border-bottom: 1px solid rgba(255, 255, 255, 0.16); }
.ft-contact a:hover { color: #fff; }
.ft-cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.ft-h { font-size: 11px; color: rgba(255, 255, 255, 0.35); letter-spacing: 0.16em; margin-bottom: 18px; }
.ft-col a { display: block; font-size: 13px; color: rgba(255, 255, 255, 0.78); margin-bottom: 14px; }
.ft-col a:hover { color: #fff; }
.ft-line { height: 1px; background: var(--line-dark); margin: 56px 0 26px; }
.ft-bot {
  display: flex; justify-content: space-between;
  font-size: 11px; color: rgba(255, 255, 255, 0.35); letter-spacing: 0.04em;
}

/* ---------- 内页通用 ---------- */
.page-head { padding: 64px var(--pad) 56px; }
.crumb { font-size: 12px; color: var(--ink-3); letter-spacing: 0.04em; display: flex; gap: 10px; flex-wrap: wrap; }
.crumb a:hover { color: var(--ink); }
.crumb em { color: var(--ink-2); }
.page-head h1 { font-size: clamp(28px, 3vw, 42px); line-height: 1.45; margin: 24px 0 0; }
.page-head p { font-size: 13px; color: var(--ink-2); line-height: 2; margin: 18px 0 0; max-width: 620px; }
.rule { height: 1px; background: var(--line); margin: 0 var(--pad); }

/* 产品列表 */
.plist { display: grid; grid-template-columns: 176px 1fr; gap: 56px; padding: 44px var(--pad) 88px; align-items: start; }
.side { display: flex; flex-direction: column; gap: 16px; position: sticky; top: 110px; }
.side-item { font-size: 13px; color: var(--ink-2); display: flex; gap: 8px; align-items: baseline; }
.side-item em { font-size: 11px; color: var(--ink-3); }
.side-item:hover { color: var(--ink); }
.side-item.on { color: var(--ink); font-weight: 500; }

.grid-prod { row-gap: 44px; }
.card-prod { display: block; }
.prod-pic {
  height: 296px;
  background-size: cover;
  background-position: center;
  border-radius: var(--r);
  transition: opacity 0.25s;
}
.card-prod:hover .prod-pic { opacity: 0.9; }
.prod-t { font-size: 15px; margin-top: 16px; }
.prod-m { font-size: 12px; color: var(--ink-3); margin-top: 8px; letter-spacing: 0.02em; }
.prod-m em { color: var(--ink-2); }

.pager { display: flex; gap: 18px; justify-content: center; margin-top: 64px; font-size: 13px; color: var(--ink-3); }
.pager a { padding: 4px 6px; }
.pager a.on { color: var(--ink); border-bottom: 1px solid var(--ink); }
.empty { padding: 80px 0; font-size: 13px; color: var(--ink-3); }

/* 产品详情 */
.pd-wrap { padding: 30px var(--pad) 96px; }
.pd { display: grid; grid-template-columns: 560px 1fr; gap: 80px; margin-top: 32px; align-items: start; }
.pd-main { height: 560px; background-size: cover; background-position: center; border-radius: var(--r); }
.pd-thumbs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-top: 14px; }
.pd-thumb {
  height: 130px; border: 1px solid transparent; border-radius: var(--r);
  background-size: cover; background-position: center;
  cursor: pointer; padding: 0;
  opacity: 0.75; transition: opacity 0.2s, border-color 0.2s;
}
.pd-thumb:hover { opacity: 1; }
.pd-thumb.on { opacity: 1; border-color: var(--ink); }

.tag { color: var(--ink-3); letter-spacing: 0.06em; margin-left: 8px; }
.pd-info h1 { font-size: clamp(24px, 2.4vw, 34px); line-height: 1.45; margin-top: 18px; }
.pd-price { font-size: 22px; margin-top: 20px; }
.pd-price em { font-size: 11px; color: var(--ink-3); letter-spacing: 0.02em; }
.pd-desc { font-size: 13px; line-height: 2; color: var(--ink-2); margin-top: 22px; }
.pd-points { margin: 20px 0 0; padding: 0; list-style: none; }
.pd-points li {
  font-size: 12.5px; color: var(--ink-2); line-height: 2.1;
  padding-left: 14px; position: relative;
}
.pd-points li::before { content: "·"; position: absolute; left: 3px; color: var(--accent); }
.pd-finish-h { font-size: 11px; color: var(--ink-3); letter-spacing: 0.06em; margin-top: 28px; }
.pd-finish { display: flex; gap: 10px; margin-top: 12px; }
.pd-finish span {
  font-size: 12px; padding: 8px 16px; border: 1px solid var(--line); border-radius: var(--r); color: var(--ink-2);
}
.pd-finish span.on { background: var(--ink); border-color: var(--ink); color: #fff; }
.pd-cta { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 32px; }
.pd-note { font-size: 11px; color: var(--ink-3); margin-top: 16px; letter-spacing: 0.03em; }

.pd-spec, .pd-detail, .pd-rel { margin-top: 72px; }
.pd-h2 { font-size: 18px; font-weight: 400; padding-bottom: 18px; border-bottom: 1px solid var(--line); }
.spec { margin-top: 8px; }
.spec-row {
  display: grid; grid-template-columns: 176px 1fr; gap: 24px;
  padding: 18px 0; border-bottom: 1px solid var(--line); font-size: 13px;
}
.spec-k { color: var(--ink-3); }
.spec-v { color: var(--ink); }
.rich { font-size: 14px; line-height: 2.1; color: var(--ink-2); margin-top: 28px; }
.rich img { border-radius: var(--r); margin: 20px 0; }
.rich h3 { font-size: 15px; font-weight: 500; color: var(--ink); margin: 30px 0 10px; }
.rich p { margin: 0 0 14px; }

/* 案例页 */
.case-list { display: flex; flex-direction: column; gap: 72px; }
.case-row { display: grid; grid-template-columns: 1fr 1fr; gap: 72px; align-items: center; }
.case-row-pic { height: 460px; background-size: cover; background-position: center; border-radius: var(--r); }
.case-row-body h2 { font-size: clamp(22px, 2.2vw, 30px); margin-top: 16px; }
.case-row-body p { font-size: 13.5px; line-height: 2.05; color: var(--ink-2); margin: 18px 0 26px; max-width: 440px; }

/* CTA 条 */
.cta-band { background: var(--dark); color: #fff; }
.cta-in {
  padding: 80px var(--pad);
  display: flex; align-items: center; justify-content: space-between; gap: 48px;
}
.cta-in h2 { font-size: clamp(22px, 2.2vw, 30px); }
.cta-in p { font-size: 13px; color: rgba(255, 255, 255, 0.55); margin-top: 16px; line-height: 1.9; }

/* 关于页 */
.about-top { display: grid; grid-template-columns: 520px 1fr; gap: 80px; align-items: start; }
.about-pic { height: 560px; background-size: cover; background-position: center; border-radius: var(--r); }
.about-body h2 { font-size: clamp(24px, 2.1vw, 30px); margin: 16px 0 0; }
.about-body p { font-size: 13.5px; line-height: 2.1; color: var(--ink-2); margin: 22px 0 0; max-width: 560px; }
.about-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 44px; }
.about-n { font-size: 24px; font-weight: 300; }
.about-n em { font-size: 12px; color: var(--ink-2); margin-left: 4px; }
.about-l { font-size: 11.5px; color: var(--ink-3); margin-top: 8px; }

.sol { border-top: 1px solid var(--ink); padding-top: 24px; }
.sol-t { font-size: 16px; font-weight: 400; }
.sol p { font-size: 13px; line-height: 2; color: var(--ink-2); margin: 16px 0 20px; }
.sol-k { font-size: 11.5px; color: var(--accent); letter-spacing: 0.04em; }

.about-q { padding-top: 0; }

/* ---------- 响应式 ---------- */
@media (max-width: 1240px) {
  :root { --pad: 64px; }
  .best { grid-template-columns: 460px 1fr; gap: 56px; }
  .quality, .about-top, .inquiry, .pd { grid-template-columns: 1fr 1fr; gap: 56px; }
  .pd { grid-template-columns: 46% 1fr; }
  .pd-main { height: 460px; }
  .case-row { gap: 48px; }
}

@media (max-width: 980px) {
  :root { --pad: 40px; }
  .hd-in { gap: 20px; }
  .nav, .hd-act .hd-tel { display: none; }
  .hd-menu {
    display: flex; flex-direction: column; gap: 5px;
    background: none; border: 0; padding: 8px; cursor: pointer;
  }
  .hd-menu span { width: 22px; height: 1px; background: var(--ink); display: block; }
  .hd-drawer {
    display: flex; flex-direction: column; gap: 2px;
    padding: 8px var(--pad) 24px; border-top: 1px solid var(--line); background: #fff;
  }
  .hd-drawer[hidden] { display: none; }
  .hd-drawer a { font-size: 14px; padding: 14px 0; border-bottom: 1px solid var(--line); }
  .drawer-tel { color: var(--ink-2); }

  .hero { grid-template-columns: 1fr; min-height: 0; }
  .hero-copy { max-width: none; padding: 56px var(--pad) 48px; order: 2; }
  .hero-pic { order: 1; min-height: 380px; }
  .hero-note { margin-top: 36px; }

  .stats-in { flex-wrap: wrap; gap: 28px 0; padding: 30px var(--pad); }
  .stat { width: 50%; }
  .stats-line { display: none; }

  .grid4 { grid-template-columns: 1fr 1fr; gap: 20px; }
  .grid3 { grid-template-columns: 1fr 1fr; gap: 20px; }
  .sec { padding: 64px var(--pad); }
  .sec-head { flex-direction: column; align-items: flex-start; gap: 18px; margin-bottom: 32px; }
  .card-pic { height: 260px; }

  .best { grid-template-columns: 1fr; gap: 40px; }
  .best-pic { height: 400px; }
  .quality, .about-top, .inquiry, .case-row { grid-template-columns: 1fr; gap: 36px; }
  .q-pic, .about-pic, .case-row-pic { min-height: 360px; height: 360px; }

  .plist { grid-template-columns: 1fr; gap: 28px; padding: 32px var(--pad) 64px; }
  .side { position: static; flex-direction: row; flex-wrap: wrap; gap: 8px 20px; }

  .pd { grid-template-columns: 1fr; gap: 32px; }
  .pd-main { height: 420px; }
  .pd-thumb { height: 90px; }
  .pd-wrap { padding: 20px var(--pad) 64px; }

  .about-stats { grid-template-columns: 1fr 1fr; gap: 24px; }
  .cta-in { flex-direction: column; align-items: flex-start; padding: 56px var(--pad); }
  .ft-in { padding: 56px var(--pad) 28px; }
  .ft-top { grid-template-columns: 1fr; gap: 40px; }
  .ft-bot { flex-direction: column; gap: 10px; }
}

@media (max-width: 600px) {
  :root { --pad: 20px; }
  .grid4, .grid3 { grid-template-columns: 1fr; }
  .card-pic { height: 300px; }
  .best-pic { height: 320px; }
  .hero-copy h1 { font-size: 26px; }
  .hero-pic { min-height: 300px; }
  .pd-main { height: 340px; }
  .pd-cta { grid-template-columns: 1fr; }
  .form { padding: 28px 22px 24px; }
  .spec-row { grid-template-columns: 110px 1fr; gap: 14px; }
  .page-head { padding: 40px var(--pad) 32px; }
  .sec { padding: 48px var(--pad); }
  .case-row-pic { height: 280px; min-height: 280px; }
  .ft-cols { grid-template-columns: 1fr 1fr; }
}