/* ==========================================================================
   老牛第二经营部 · 官网视觉系统
   方向：成熟 / 克制 / 有经验感 / 有温度 / 现代 / 个人IP
   核心：视觉主体是「人」，不是「机构」
   ========================================================================== */

/* ---------- 1. 变量 ---------- */
:root {
  /* 纸与墨 */
  --paper:      #FBF8F3;
  --paper-2:    #F4EFE6;
  --paper-3:    #EDE6DA;
  --card:       #FFFFFF;
  --ink:        #17150F;
  --ink-1:      #2B2620;
  --ink-2:      #4A443B;
  --ink-3:      #7C7469;
  --ink-4:      #A79E92;
  --line:       #E6DED0;
  --line-2:     #D8CEBC;

  /* 品牌色：老牛赭红 */
  --rust:       #A63A1E;
  --rust-deep:  #832C13;
  --rust-soft:  #C96348;
  --rust-wash:  #FBEFEA;

  /* 辅色 */
  --gold:       #B08B4F;
  --gold-wash:  #F8F1E4;
  --green:      #2C4A3E;
  --green-wash: #EDF2EF;

  /* 尺度 */
  --radius-s:   4px;
  --radius:     8px;
  --radius-l:   16px;
  --shadow-s:   0 1px 2px rgba(23,21,15,.04), 0 2px 8px rgba(23,21,15,.04);
  --shadow:     0 2px 6px rgba(23,21,15,.05), 0 12px 32px rgba(23,21,15,.07);
  --shadow-l:   0 4px 12px rgba(23,21,15,.06), 0 24px 60px rgba(23,21,15,.10);

  /* 字体 */
  --sans: "PingFang SC", "HarmonyOS Sans SC", "Source Han Sans SC",
          "Microsoft YaHei UI", "Microsoft YaHei", "Hiragino Sans GB",
          -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --serif: "Source Han Serif SC", "Noto Serif SC", "Songti SC", "STSong",
           "SimSun", Georgia, "Times New Roman", serif;

  --nav-h: 74px;
  --ease: cubic-bezier(.22,.61,.36,1);
}

/* ---------- 2. 基础 ---------- */
*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink-1);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.85;
  letter-spacing: .012em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  overflow-wrap: break-word;
  word-break: normal;
}

/* 极淡的纸纹 */
body::before {
  content: "";
  position: fixed; inset: 0;
  pointer-events: none; z-index: 0;
  opacity: .35;
  background-image:
    radial-gradient(rgba(23,21,15,.035) 1px, transparent 1px),
    radial-gradient(rgba(23,21,15,.025) 1px, transparent 1px);
  background-size: 28px 28px, 28px 28px;
  background-position: 0 0, 14px 14px;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color .22s var(--ease); }
button { font-family: inherit; cursor: pointer; border: 0; background: none; }
input, textarea, select { font-family: inherit; font-size: inherit; color: inherit; }

::selection { background: var(--rust); color: #fff; }

.wrap { width: 100%; max-width: 1180px; margin: 0 auto; padding: 0 28px; position: relative; z-index: 1; }
.wrap-narrow { max-width: 860px; }

/* ---------- 3. 排版 ---------- */
h1, h2, h3, h4 { margin: 0; color: var(--ink); font-weight: 700; letter-spacing: -.01em; line-height: 1.28; }

.display {
  font-size: clamp(2.4rem, 5.6vw, 4.1rem);
  line-height: 1.16;
  letter-spacing: -.028em;
  font-weight: 800;
}

.h2 {
  font-size: clamp(1.7rem, 3.3vw, 2.5rem);
  line-height: 1.3;
  letter-spacing: -.02em;
  font-weight: 700;
}

.h3 { font-size: clamp(1.15rem, 2vw, 1.4rem); line-height: 1.5; }
.h4 { font-size: 1.05rem; line-height: 1.6; }

.serif { font-family: var(--serif); font-weight: 600; letter-spacing: .01em; }

.lead {
  font-size: clamp(1rem, 1.5vw, 1.14rem);
  color: var(--ink-2);
  line-height: 1.9;
}

.muted { color: var(--ink-3); }
.small { font-size: .875rem; }
.tiny  { font-size: .78rem; }

.rust { color: var(--rust); }

/* 栏目序号标签 */
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: .74rem; font-weight: 700;
  letter-spacing: .22em; text-transform: uppercase;
  color: var(--rust);
  margin-bottom: 18px;
}
.eyebrow::before {
  content: ""; width: 22px; height: 1px; background: var(--rust); opacity: .55;
}
.eyebrow.no-line::before { display: none; }

/* 章节头 */
.sec-head { max-width: 780px; margin-bottom: 52px; }
.sec-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.sec-head .h2 + .lead { margin-top: 20px; }

.section { padding: 104px 0; position: relative; }
.section.tight { padding: 76px 0; }
.section.alt { background: var(--paper-2); }
.section.alt::before, .section.alt::after {
  content: ""; position: absolute; left: 0; right: 0; height: 1px; background: var(--line);
}
.section.alt::before { top: 0; }
.section.alt::after { bottom: 0; }
.section.ink { background: #1B1813; color: #E8E2D7; }
.section.ink h1, .section.ink h2, .section.ink h3, .section.ink h4 { color: #FBF8F3; }
.section.ink .lead, .section.ink .muted { color: #B8B0A2; }
.section.ink .eyebrow { color: var(--gold); }
.section.ink .eyebrow::before { background: var(--gold); }

/* 引文 */
.quote {
  font-family: var(--serif);
  font-size: clamp(1.2rem, 2.4vw, 1.7rem);
  line-height: 1.75;
  color: var(--ink);
  font-weight: 600;
  border-left: 3px solid var(--rust);
  padding: 4px 0 4px 28px;
  margin: 0;
}
.section.ink .quote { color: #FBF8F3; border-color: var(--gold); }

/* ---------- 4. 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  padding: 0 28px; height: 50px;
  border-radius: 999px;
  font-size: .95rem; font-weight: 600; letter-spacing: .01em;
  border: 1px solid transparent;
  transition: all .24s var(--ease);
  white-space: nowrap;
}
.btn .arrow { transition: transform .28s var(--ease); }
.btn:hover .arrow { transform: translateX(4px); }

.btn-primary { background: var(--rust); color: #fff; box-shadow: 0 6px 18px rgba(166,58,30,.22); }
.btn-primary:hover { background: var(--rust-deep); box-shadow: 0 10px 26px rgba(166,58,30,.30); transform: translateY(-1px); }

.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line-2); }
.btn-ghost:hover { border-color: var(--ink); background: rgba(23,21,15,.03); }

.btn-light { background: #FBF8F3; color: var(--ink); }
.btn-light:hover { background: #fff; transform: translateY(-1px); }

.btn-line-light { background: transparent; color: #FBF8F3; border-color: rgba(251,248,243,.34); }
.btn-line-light:hover { border-color: rgba(251,248,243,.8); }

.btn-sm { height: 42px; padding: 0 22px; font-size: .875rem; }
.btn-row { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }

/* 文字链接 */
.link-more {
  display: inline-flex; align-items: center; gap: 7px;
  font-size: .9rem; font-weight: 600; color: var(--rust);
  border-bottom: 1px solid transparent; padding-bottom: 2px;
}
.link-more:hover { border-color: var(--rust); gap: 11px; }

/* ---------- 5. 顶栏导航 ---------- */
.topbar {
  position: sticky; top: 0; z-index: 90;
  height: var(--nav-h);
  background: rgba(251,248,243,.86);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s var(--ease), background .3s var(--ease);
}
.topbar.scrolled { border-bottom-color: var(--line); background: rgba(251,248,243,.94); }

.topbar-inner { display: flex; align-items: center; height: var(--nav-h); gap: 28px; }

/* Logo */
.logo { display: flex; align-items: center; gap: 11px; flex-shrink: 0; }
.logo-mark {
  width: 42px; height: 42px; border-radius: 6px;
  background: var(--rust); color: #fff;
  display: grid; place-items: center;
  font-family: var(--serif); font-size: 1.28rem; font-weight: 700;
  letter-spacing: 0; line-height: 1;
  box-shadow: 0 4px 12px rgba(166,58,30,.24);
}
.logo-text { display: flex; flex-direction: column; line-height: 1.25; }
.logo-text b { font-size: .98rem; font-weight: 700; letter-spacing: .02em; color: var(--ink); }
.logo-text span { font-size: .66rem; letter-spacing: .16em; color: var(--ink-4); }

/* 主菜单 */
.nav { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.nav a {
  position: relative;
  padding: 9px 15px; border-radius: 999px;
  font-size: .93rem; font-weight: 500; color: var(--ink-2);
}
.nav a::after {
  content: ""; position: absolute; left: 15px; right: 15px; bottom: 3px;
  height: 2px; background: var(--rust); border-radius: 2px;
  transform: scaleX(0); transform-origin: left; transition: transform .28s var(--ease);
}
.nav a:hover { color: var(--ink); }
.nav a:hover::after { transform: scaleX(1); }
.nav a.active { color: var(--ink); font-weight: 700; }
.nav a.active::after { transform: scaleX(1); }

.topbar .btn-sm { margin-left: 8px; }

/* 汉堡 */
.burger {
  display: none; width: 44px; height: 44px; margin-left: auto;
  border-radius: 8px; position: relative;
}
.burger span {
  position: absolute; left: 13px; width: 18px; height: 1.6px; background: var(--ink);
  border-radius: 2px; transition: all .3s var(--ease);
}
.burger span:nth-child(1) { top: 17px; }
.burger span:nth-child(2) { top: 22px; }
.burger span:nth-child(3) { top: 27px; }
.burger.open span:nth-child(1) { top: 22px; transform: rotate(45deg); }
.burger.open span:nth-child(2) { opacity: 0; }
.burger.open span:nth-child(3) { top: 22px; transform: rotate(-45deg); }

/* 移动端抽屉 */
.drawer {
  position: fixed; inset: var(--nav-h) 0 0 0; z-index: 85;
  background: var(--paper);
  padding: 24px 28px 40px;
  transform: translateX(100%); transition: transform .34s var(--ease);
  overflow-y: auto;
}
.drawer.open { transform: translateX(0); }
.drawer a {
  display: block; padding: 17px 0;
  font-size: 1.12rem; font-weight: 600; color: var(--ink);
  border-bottom: 1px solid var(--line);
}
.drawer a:last-of-type { border-bottom: 0; }
.drawer .btn { width: 100%; margin-top: 26px; }

/* 右侧固定 CTA */
.float-cta {
  position: fixed; right: 22px; top: 50%; transform: translateY(-50%);
  z-index: 80;
  writing-mode: vertical-rl;
  padding: 22px 15px;
  background: var(--rust); color: #fff;
  border-radius: 999px;
  font-size: .93rem; font-weight: 700; letter-spacing: .16em;
  box-shadow: 0 8px 26px rgba(166,58,30,.30);
  transition: all .26s var(--ease);
}
.float-cta:hover { background: var(--rust-deep); transform: translateY(-50%) translateX(-3px); }

/* ---------- 6. 首屏 Hero ---------- */
.hero { position: relative; padding: 92px 0 96px; overflow: hidden; }
.hero::after {
  content: ""; position: absolute; z-index: 0;
  right: -180px; top: -140px; width: 640px; height: 640px;
  background: radial-gradient(circle, rgba(166,58,30,.075) 0%, rgba(166,58,30,0) 68%);
  pointer-events: none;
}
.hero-grid {
  display: grid; grid-template-columns: 1.35fr .85fr;
  gap: 72px; align-items: center;
}
.hero h1 .accent { color: var(--rust); }
.hero-sub {
  margin-top: 30px;
  font-family: var(--serif);
  font-size: clamp(1.12rem, 2.1vw, 1.44rem);
  font-weight: 600; line-height: 1.85; color: var(--ink);
}
.hero-sub em { font-style: normal; display: block; }
.hero-desc {
  margin-top: 24px; max-width: 560px;
  font-size: 1rem; line-height: 1.95; color: var(--ink-2);
}
.hero .btn-row { margin-top: 38px; }

/* 首屏人物视觉位 */
.portrait {
  position: relative;
  aspect-ratio: 3 / 4;
  border-radius: var(--radius-l);
  background: linear-gradient(160deg, #EFE8DC 0%, #E4DACA 55%, #D9CDB8 100%);
  overflow: hidden;
  box-shadow: var(--shadow-l);
}
.portrait::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(circle at 50% 34%, rgba(255,255,255,.75) 0%, rgba(255,255,255,0) 46%),
    radial-gradient(circle at 50% 108%, rgba(166,58,30,.16) 0%, rgba(166,58,30,0) 55%);
}
.portrait-inner {
  position: absolute; inset: 0;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 22px;
  text-align: center; padding: 34px;
}
.portrait-silhouette { width: 150px; height: 150px; opacity: .5; }
.portrait-tag {
  position: absolute; left: 22px; bottom: 22px;
  background: rgba(255,255,255,.86); backdrop-filter: blur(8px);
  border-radius: var(--radius); padding: 12px 16px;
  box-shadow: var(--shadow-s);
  text-align: left;
}
.portrait-tag b { display: block; font-size: .95rem; color: var(--ink); }
.portrait-tag span { font-size: .74rem; letter-spacing: .1em; color: var(--ink-3); }

/* Hero 下方数据/信任条 */
.hero-strip {
  margin-top: 68px; padding-top: 30px;
  border-top: 1px solid var(--line);
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px;
}
.hero-strip .item b {
  display: block; font-family: var(--serif);
  font-size: 1.42rem; color: var(--ink); letter-spacing: -.01em;
}
.hero-strip .item > span {
  display: block; font-size: .82rem; line-height: 1.6; color: var(--ink-3);
}

/* ---------- 7. 场景卡片 ---------- */
.card-grid { display: grid; gap: 20px; }
.g-2 { grid-template-columns: repeat(2, 1fr); }
.g-3 { grid-template-columns: repeat(3, 1fr); }
.g-4 { grid-template-columns: repeat(4, 1fr); }

.scene {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 28px 28px;
  position: relative; overflow: hidden;
  transition: all .3s var(--ease);
}
.scene::after {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
  background: var(--rust); transform: scaleY(0); transform-origin: top;
  transition: transform .34s var(--ease);
}
.scene:hover { border-color: var(--line-2); box-shadow: var(--shadow); transform: translateY(-3px); }
.scene:hover::after { transform: scaleY(1); }
.scene-no {
  font-family: var(--serif); font-size: .8rem; font-weight: 700;
  color: var(--ink-4); letter-spacing: .1em;
}
.scene h4 { margin: 14px 0 10px; font-size: 1.1rem; }
.scene p { margin: 0; font-size: .9rem; line-height: 1.8; color: var(--ink-3); }
.scene .flag {
  display: inline-block; margin-top: 16px;
  font-size: .74rem; letter-spacing: .06em; color: var(--rust);
  background: var(--rust-wash); border-radius: 3px; padding: 3px 9px;
}

/* ---------- 8. 三件事 / 支柱 ---------- */
.pillar {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  padding: 38px 34px 34px;
  display: flex; flex-direction: column;
  position: relative;
  transition: all .3s var(--ease);
}
.pillar:hover { box-shadow: var(--shadow); transform: translateY(-4px); border-color: var(--line-2); }
.pillar-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 24px; }
.pillar-idx { font-family: var(--serif); font-size: 2.1rem; font-weight: 700; color: var(--paper-3); line-height: 1; }
.pillar-badge {
  font-size: .72rem; font-weight: 700; letter-spacing: .12em;
  color: var(--rust); border: 1px solid rgba(166,58,30,.28);
  border-radius: 999px; padding: 4px 12px;
}
.pillar h3 { font-size: 1.42rem; margin-bottom: 18px; }
.pillar-q {
  font-family: var(--serif); font-size: 1.06rem; font-weight: 600;
  color: var(--rust); margin-bottom: 16px; line-height: 1.7;
}
.pillar-block { margin-bottom: 18px; }
.pillar-block span {
  display: block; font-size: .72rem; font-weight: 700; letter-spacing: .16em;
  color: var(--ink-4); margin-bottom: 7px;
}
.pillar-block p { margin: 0; font-size: .9rem; line-height: 1.85; color: var(--ink-2); }
.pillar-result {
  margin-top: auto; padding: 16px 18px;
  background: var(--green-wash); border-radius: var(--radius);
  font-size: .9rem; line-height: 1.8; color: var(--green); font-weight: 500;
}
.pillar .btn { margin-top: 22px; width: 100%; }

/* ---------- 9. 服务卡（四阶） ---------- */
.svc {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius-l); overflow: hidden;
  display: flex; flex-direction: column;
  transition: all .3s var(--ease);
}
.svc:hover { box-shadow: var(--shadow); transform: translateY(-4px); border-color: var(--line-2); }
.svc-head { padding: 30px 30px 0; }
.svc-tag {
  display: inline-block; font-size: .7rem; font-weight: 700; letter-spacing: .1em;
  color: var(--rust); background: var(--rust-wash);
  border-radius: 999px; padding: 5px 13px; margin-bottom: 18px;
}
.svc h3 { font-size: 1.35rem; margin-bottom: 14px; }
.svc-body { padding: 0 30px; flex: 1; }
.svc-body p { margin: 0 0 16px; font-size: .9rem; line-height: 1.88; color: var(--ink-2); }
.svc-list { list-style: none; margin: 0 0 18px; padding: 0; display: flex; flex-wrap: wrap; gap: 7px; }
.svc-list li {
  font-size: .78rem; color: var(--ink-2);
  background: var(--paper-2); border-radius: 4px; padding: 4px 10px;
}
.svc-value {
  font-family: var(--serif); font-size: .98rem; font-weight: 600;
  color: var(--ink); line-height: 1.7;
  padding: 14px 0 0; border-top: 1px dashed var(--line-2);
}
.svc-foot { padding: 22px 30px 30px; }

/* ---------- 10. 分类网格（执行资源） ---------- */
.cat {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 26px 24px;
  transition: all .28s var(--ease); position: relative;
}
.cat:hover { border-color: var(--rust); box-shadow: var(--shadow); transform: translateY(-3px); }
.cat-ico {
  width: 40px; height: 40px; border-radius: 8px;
  background: var(--paper-2); display: grid; place-items: center;
  margin-bottom: 18px; color: var(--rust);
}
.cat h4 { font-size: 1.02rem; margin-bottom: 12px; }
.cat ul { list-style: none; margin: 0; padding: 0; }
.cat li { font-size: .84rem; color: var(--ink-3); line-height: 1.95; }
.cat .go {
  display: inline-block; margin-top: 14px;
  font-size: .8rem; font-weight: 600; color: var(--rust); opacity: 0; transition: opacity .25s var(--ease);
}
.cat:hover .go { opacity: 1; }

/* 统一提示条 */
.note {
  display: flex; gap: 14px; align-items: flex-start;
  background: var(--gold-wash);
  border-left: 3px solid var(--gold);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 18px 24px;
  font-size: .92rem; line-height: 1.85; color: var(--ink-2);
}
.note b { color: var(--ink); }

/* ---------- 11. 流程 ---------- */
.flow { display: flex; align-items: stretch; gap: 0; flex-wrap: wrap; }
.flow-step {
  flex: 1 1 0; min-width: 118px;
  padding: 24px 12px; text-align: center;
  position: relative;
}
.flow-step:not(:last-child)::after {
  content: ""; position: absolute; right: -1px; top: 50%;
  width: 10px; height: 10px;
  border-top: 1.6px solid var(--line-2); border-right: 1.6px solid var(--line-2);
  transform: translateY(-50%) rotate(45deg);
}
.flow-no {
  font-family: var(--serif); font-size: .74rem; font-weight: 700;
  color: var(--rust); letter-spacing: .14em; margin-bottom: 10px; display: block;
}
.flow-step b { display: block; font-size: 1.06rem; color: var(--ink); font-weight: 700; }
.flow-step span.d { display: block; margin-top: 8px; font-size: .78rem; color: var(--ink-3); line-height: 1.7; }
.flow-loop {
  margin-top: 26px; font-size: .85rem; color: var(--ink-3);
  display: inline-flex; align-items: center; gap: 10px;
}
.flow-loop::before {
  content: "↻"; font-size: 1.1rem; color: var(--rust);
}

/* 深色区块下的流程配色 */
.section.ink .flow-no { color: var(--gold); }
.section.ink .flow-step b { color: #FBF8F3; }
.section.ink .flow-step span.d { color: #9C948A; }
.section.ink .flow-step:not(:last-child)::after { border-color: rgba(251,248,243,.26); }
.section.ink .tri-item { background: #201C16; border-color: #35302A; }
.section.ink .tri-item b { color: #FBF8F3; }
.section.ink .tri-item p { color: #9C948A; }
.section.ink .tri-item .tri-role { background: #2C2721; color: #E8E2D7; }
.section.ink .tri-item.hl { background: var(--rust); border-color: var(--rust); }
.section.ink .tri-item.hl p { color: #F2D9D1; }
.section.ink .tri-item.hl span { color: #F6E3DC; }
.section.ink .tri-item.hl .tri-role { background: rgba(255,255,255,.18); color: #fff; }

/* ---------- 12. 三方关系 ---------- */
.tri { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.tri-item {
  text-align: center; padding: 34px 24px;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-l);
}
.tri-item.hl { background: var(--ink); border-color: var(--ink); }
.tri-item.hl b, .tri-item.hl span, .tri-item.hl p { color: #FBF8F3; }
.tri-item.hl p { color: #B8B0A2; }
.tri-role {
  width: 52px; height: 52px; margin: 0 auto 18px; border-radius: 50%;
  display: grid; place-items: center; font-family: var(--serif);
  font-size: 1.1rem; font-weight: 700;
  background: var(--paper-2); color: var(--ink);
}
.tri-item.hl .tri-role { background: var(--rust); color: #fff; }
.tri-item b { display: block; font-size: 1.1rem; margin-bottom: 8px; color: var(--ink); }
.tri-item span { font-size: .8rem; letter-spacing: .1em; color: var(--rust); }
.tri-item p { margin: 14px 0 0; font-size: .86rem; line-height: 1.85; color: var(--ink-3); }

/* ---------- 13. 关于老牛 ---------- */
.about-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 64px; align-items: center; }
.tag-cloud { display: flex; flex-wrap: wrap; gap: 10px; margin: 26px 0 0; }
.tag-cloud span {
  font-size: .84rem; color: var(--ink-2);
  border: 1px solid var(--line-2); border-radius: 999px;
  padding: 6px 16px; background: var(--card);
}

/* ---------- 14. 观点 / 案例 ---------- */
.post {
  display: flex; flex-direction: column;
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); overflow: hidden;
  transition: all .3s var(--ease);
}
.post:hover { box-shadow: var(--shadow); transform: translateY(-3px); border-color: var(--line-2); }
.post-cover {
  aspect-ratio: 16 / 9;
  background: linear-gradient(140deg, var(--paper-3), var(--paper-2));
  position: relative;
}
.post-cover::after {
  content: ""; position: absolute; inset: 0;
  background: repeating-linear-gradient(115deg, rgba(23,21,15,.028) 0 1px, transparent 1px 16px);
}
.post-body { padding: 24px 24px 26px; flex: 1; display: flex; flex-direction: column; }
.post-cat { font-size: .72rem; font-weight: 700; letter-spacing: .12em; color: var(--rust); margin-bottom: 12px; }
.post h4 { font-size: 1.04rem; line-height: 1.6; margin-bottom: 12px; }
.post p { margin: 0; font-size: .86rem; color: var(--ink-3); line-height: 1.8; }
.post-meta { margin-top: 18px; font-size: .74rem; color: var(--ink-4); letter-spacing: .06em; }

/* 案例：判断过程时间轴 */
.case-line { position: relative; padding-left: 34px; }
.case-line::before {
  content: ""; position: absolute; left: 7px; top: 8px; bottom: 8px; width: 1px; background: var(--line-2);
}
.case-item { position: relative; padding-bottom: 34px; }
.case-item:last-child { padding-bottom: 0; }
.case-item::before {
  content: ""; position: absolute; left: -34px; top: 8px;
  width: 15px; height: 15px; border-radius: 50%;
  background: var(--paper); border: 2px solid var(--line-2);
}
.case-item.on::before { border-color: var(--rust); background: var(--rust); }
.case-item b { display: block; font-size: 1rem; color: var(--ink); margin-bottom: 8px; }
.case-item p { margin: 0; font-size: .9rem; color: var(--ink-2); line-height: 1.85; }

/* ---------- 15. CTA 区块 ---------- */
.cta-band { position: relative; overflow: hidden; }
.cta-band::before {
  content: ""; position: absolute; right: -100px; bottom: -160px;
  width: 520px; height: 520px;
  background: radial-gradient(circle, rgba(176,139,79,.15) 0%, rgba(176,139,79,0) 66%);
}
.cta-band .wrap { position: relative; z-index: 1; }
.cta-band .display { font-size: clamp(1.9rem, 4.2vw, 3rem); }

/* ---------- 16. 表单 ---------- */
.form-card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius-l); padding: 42px 44px;
  box-shadow: var(--shadow);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.field { margin-bottom: 22px; }
.field label {
  display: block; font-size: .84rem; font-weight: 600;
  color: var(--ink-2); margin-bottom: 9px;
}
.field label .req { color: var(--rust); margin-left: 3px; }
.field input, .field textarea, .field select {
  width: 100%; padding: 13px 15px;
  background: var(--paper);
  border: 1px solid var(--line-2); border-radius: var(--radius);
  font-size: .93rem; line-height: 1.6;
  transition: border-color .22s var(--ease), background .22s var(--ease), box-shadow .22s var(--ease);
}
.field textarea { resize: vertical; min-height: 96px; }
.field input:focus, .field textarea:focus, .field select:focus {
  outline: 0; border-color: var(--rust); background: #fff;
  box-shadow: 0 0 0 3px rgba(166,58,30,.10);
}
.field .hint { margin-top: 7px; font-size: .76rem; color: var(--ink-4); }
/* 字段校验错误提示：沿用 .hint 的位置与字号，只换成提示色，不改动现有布局 */
.field .field-error { margin-top: 7px; font-size: .76rem; color: var(--rust); }

/* 单选服务 */
.choice-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.choice { position: relative; }
.choice input { position: absolute; opacity: 0; pointer-events: none; }
.choice span {
  display: block; padding: 13px 16px;
  border: 1px solid var(--line-2); border-radius: var(--radius);
  font-size: .88rem; color: var(--ink-2); background: var(--paper);
  transition: all .22s var(--ease); cursor: pointer;
}
.choice input:checked + span {
  border-color: var(--rust); background: var(--rust-wash);
  color: var(--rust); font-weight: 600;
}
.choice span:hover { border-color: var(--line-2); background: #fff; }

.form-foot { display: flex; flex-wrap: wrap; align-items: center; gap: 16px; margin-top: 8px; }
.form-foot .tiny { color: var(--ink-4); flex: 1; min-width: 220px; }

/* 联系方式卡 */
.contact-item {
  display: flex; gap: 16px; align-items: flex-start;
  padding: 20px 0; border-bottom: 1px solid var(--line);
}
.contact-item:last-child { border-bottom: 0; }
.contact-ico {
  width: 42px; height: 42px; flex-shrink: 0; border-radius: 10px;
  background: var(--paper-2); display: grid; place-items: center; color: var(--rust);
  transition: all .25s var(--ease); cursor: pointer;
}
.contact-ico:hover { background: var(--rust-wash); }
.contact-item b { display: block; font-size: .95rem; color: var(--ink); }
.contact-item span { font-size: .84rem; color: var(--ink-3); }
.qr {
  width: 118px; height: 118px; border-radius: var(--radius);
  background: var(--card); border: 1px solid var(--line);
  display: grid; place-items: center; color: var(--ink-4); font-size: .74rem;
  text-align: center;
}

/* ---------- 17. 弹窗 ---------- */
.modal {
  position: fixed; inset: 0; z-index: 200;
  display: none; align-items: center; justify-content: center;
  padding: 24px;
  background: rgba(23,21,15,.52);
  backdrop-filter: blur(4px);
}
.modal.open { display: flex; animation: fadeIn .22s var(--ease); }
.modal-box {
  background: var(--paper); border-radius: var(--radius-l);
  width: 100%; max-width: 660px; max-height: 90vh; overflow-y: auto;
  padding: 40px 42px; position: relative;
  box-shadow: var(--shadow-l);
  animation: riseIn .32s var(--ease);
}
.modal-close {
  position: absolute; right: 18px; top: 18px;
  width: 36px; height: 36px; border-radius: 50%;
  display: grid; place-items: center; color: var(--ink-3);
  font-size: 1.3rem; line-height: 1; transition: all .2s var(--ease);
}
.modal-close:hover { background: var(--paper-3); color: var(--ink); }
.modal-box h3 { font-size: 1.5rem; margin-bottom: 10px; }
.modal-box > p { margin: 0 0 28px; font-size: .92rem; color: var(--ink-3); line-height: 1.85; }

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes riseIn { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: none; } }

/* 提交成功 */
.toast {
  position: fixed; left: 50%; bottom: 40px; transform: translate(-50%, 20px);
  background: var(--ink); color: #FBF8F3;
  padding: 14px 26px; border-radius: 999px;
  font-size: .9rem; z-index: 300; opacity: 0; pointer-events: none;
  transition: all .3s var(--ease); box-shadow: var(--shadow-l);
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* ---------- 18. 内页 Hero ---------- */
.page-hero { padding: 76px 0 68px; position: relative; }
.page-hero .display { max-width: 900px; }
.page-hero .lead { max-width: 720px; margin-top: 24px; }
.page-hero .btn-row { margin-top: 34px; }
.crumb { display: flex; align-items: center; gap: 8px; font-size: .78rem; color: var(--ink-4); margin-bottom: 26px; }
.crumb a:hover { color: var(--rust); }
.crumb i { font-style: normal; opacity: .5; }

/* 锚点子导航 */
.subnav {
  position: sticky; top: var(--nav-h); z-index: 60;
  background: rgba(251,248,243,.92);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
}
.subnav-inner { display: flex; gap: 8px; overflow-x: auto; padding: 12px 0; scrollbar-width: none; }
.subnav-inner::-webkit-scrollbar { display: none; }
.subnav a {
  font-size: .87rem; color: var(--ink-3); white-space: nowrap;
  padding: 7px 15px; border-radius: 999px; transition: all .2s var(--ease);
}
.subnav a:hover, .subnav a.on { background: var(--ink); color: #FBF8F3; }

/* 两栏详情 */
.two-col { display: grid; grid-template-columns: 1.5fr .85fr; gap: 64px; align-items: start; }
.sticky-side { position: sticky; top: calc(var(--nav-h) + 24px); }
.side-card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius-l); padding: 30px 28px;
  box-shadow: var(--shadow-s);
}
.side-card h4 { font-size: 1.06rem; margin-bottom: 14px; }
.side-card ul { list-style: none; margin: 0 0 24px; padding: 0; }
.side-card li {
  position: relative; padding-left: 20px;
  font-size: .88rem; color: var(--ink-2); line-height: 2.05;
}
.side-card li::before {
  content: ""; position: absolute; left: 0; top: 13px;
  width: 6px; height: 6px; border-radius: 50%; background: var(--rust); opacity: .6;
}

/* 清单型内容块 */
.block-question { margin-bottom: 42px; }
.block-question:last-child { margin-bottom: 0; }
.block-question h3 { font-size: 1.34rem; margin-bottom: 16px; }
.block-question p { margin: 0 0 14px; font-size: .95rem; line-height: 1.92; color: var(--ink-2); }
.block-question p:last-child { margin-bottom: 0; }

/* 编号列表 */
.num-list { list-style: none; margin: 0; padding: 0; counter-reset: n; }
.num-list li {
  position: relative; padding: 18px 0 18px 54px; counter-increment: n;
  border-bottom: 1px solid var(--line);
}
.num-list li:last-child { border-bottom: 0; }
.num-list li::before {
  content: counter(n, decimal-leading-zero);
  position: absolute; left: 0; top: 18px;
  font-family: var(--serif); font-size: .88rem; font-weight: 700; color: var(--rust);
  letter-spacing: .04em;
}
.num-list b { display: block; font-size: 1rem; color: var(--ink); margin-bottom: 6px; }
.num-list span { font-size: .88rem; color: var(--ink-3); line-height: 1.85; }

/* 深色区块下的编号列表 */
.section.ink .num-list li { border-bottom-color: rgba(251,248,243,.14); }
.section.ink .num-list li::before { color: var(--gold); }
.section.ink .num-list b { color: #FBF8F3; }
.section.ink .num-list span { color: #9C948A; }

/* 问答式卡片 */
.qa {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 28px 28px;
  transition: all .28s var(--ease);
}
.qa:hover { border-color: var(--line-2); box-shadow: var(--shadow-s); }
.qa .q {
  font-family: var(--serif); font-size: 1.16rem; font-weight: 600;
  color: var(--ink); margin-bottom: 14px; line-height: 1.6;
}
.qa .a { font-size: .9rem; color: var(--ink-2); line-height: 1.9; }
.qa .a strong { color: var(--rust); }

/* 对话气泡（关键点案例） */
.dialogue { display: flex; flex-direction: column; gap: 16px; }
.bubble { display: flex; gap: 14px; align-items: flex-start; }
.bubble-av {
  width: 40px; height: 40px; flex-shrink: 0; border-radius: 10px;
  display: grid; place-items: center; font-family: var(--serif);
  font-size: .92rem; font-weight: 700;
}
.bubble.boss .bubble-av { background: var(--paper-3); color: var(--ink-2); }
.bubble.niu .bubble-av { background: var(--rust); color: #fff; }
.bubble-txt {
  background: var(--card); border: 1px solid var(--line);
  border-radius: 4px var(--radius) var(--radius) var(--radius);
  padding: 15px 20px; font-size: .92rem; line-height: 1.85; color: var(--ink-1);
}
.bubble.niu .bubble-txt { background: var(--rust-wash); border-color: rgba(166,58,30,.16); }
.bubble-txt b { color: var(--rust); }

/* 责任划分表 */
.split-table { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-l); overflow: hidden; }
.split-row { display: grid; grid-template-columns: 200px 1fr; border-bottom: 1px solid var(--line); }
.split-row:last-child { border-bottom: 0; }
.split-row > div { padding: 22px 26px; }
.split-row .k {
  background: var(--paper-2); font-size: .92rem; font-weight: 700; color: var(--ink);
  border-right: 1px solid var(--line);
}
.split-row .v { font-size: .9rem; color: var(--ink-2); line-height: 1.9; }

/* ---------- 19. 阶段选择器 / 对比表 ---------- */
.stage-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.stage-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.stage-grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
.stage {
  position: relative; display: block;
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius-l); padding: 30px 24px 26px;
  transition: all .3s var(--ease);
}
.stage:hover { border-color: var(--rust); box-shadow: var(--shadow); transform: translateY(-4px); }
.stage-no {
  font-family: var(--serif); font-size: .76rem; font-weight: 700;
  letter-spacing: .14em; color: var(--ink-4); display: block; margin-bottom: 16px;
}
.stage b { display: block; font-size: 1.02rem; line-height: 1.55; color: var(--ink); margin-bottom: 16px; }
.stage .to {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: .8rem; font-weight: 700; color: var(--rust);
  border-top: 1px dashed var(--line-2); padding-top: 14px; width: 100%;
}
.stage.special { background: var(--ink); border-color: var(--ink); }
.stage.special b { color: #FBF8F3; }
.stage.special .stage-no { color: #8A8072; }
.stage.special .to { color: var(--gold); border-top-color: rgba(251,248,243,.2); }
.stage.special:hover { border-color: var(--ink); }
.stage-note {
  margin-top: 18px; font-size: .82rem; color: var(--ink-3); line-height: 1.8;
}

.cmp { width: 100%; border-collapse: collapse; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-l); overflow: hidden; }
.cmp th, .cmp td { padding: 18px 20px; text-align: left; font-size: .88rem; border-bottom: 1px solid var(--line); vertical-align: top; }
.cmp thead th { background: var(--paper-2); font-size: .8rem; letter-spacing: .08em; color: var(--ink-2); font-weight: 700; }
.cmp tbody tr:last-child td { border-bottom: 0; }
.cmp td:first-child { font-weight: 700; color: var(--ink); white-space: nowrap; }
.cmp td { color: var(--ink-2); line-height: 1.8; }
.cmp tbody tr:hover td { background: rgba(166,58,30,.025); }
.cmp-wrap { overflow-x: auto; }

/* ---------- 20. 页脚 ---------- */
.footer { background: #15130F; color: #9C948A; padding: 74px 0 34px; position: relative; z-index: 1; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 44px; padding-bottom: 50px; border-bottom: 1px solid rgba(251,248,243,.10); }
.footer h4 { color: #FBF8F3; font-size: .84rem; letter-spacing: .16em; margin-bottom: 20px; font-weight: 700; }
.footer a { font-size: .88rem; color: #9C948A; display: block; padding: 6px 0; }
.footer a:hover { color: #FBF8F3; }
.footer .logo-text b { color: #FBF8F3; }
.footer .logo-text span { color: #6F6862; }
.footer .slogan {
  font-family: var(--serif); font-size: 1.16rem; font-weight: 600;
  color: #FBF8F3; line-height: 1.75; margin: 24px 0 0; max-width: 330px;
}
.footer-bottom {
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 14px;
  padding-top: 28px; font-size: .78rem; color: #6F6862;
}

/* ICP 备案号：法律要求可点击跳转工信部备案系统 */
.footer-icp a { color: #6F6862; text-decoration: none; }
.footer-icp a:hover { color: var(--ink, #2B2724); text-decoration: underline; }

/* ---------- 21B. 二维码 · 联系方式 · 图片位（H5 优先） ---------- */

/* 二维码：有图显示图，无图显示提示。用相邻兄弟选择器判断，
   不依赖 :has()，老浏览器也不会同时显示图和提示。 */
.qr {
  position: relative; flex-shrink: 0;
  width: 118px; height: 118px; border-radius: var(--radius);
  background: var(--card); border: 1px solid var(--line);
  display: grid; place-items: center; overflow: hidden;
  color: var(--ink-4); font-size: .74rem; text-align: center; line-height: 1.5;
}
.qr-lg { width: 200px; height: 200px; }
.qr-sm { width: 112px; height: 112px; }
.qr img { display: block; width: 100%; height: 100%; object-fit: contain; background: #fff; }
.qr img[data-no-src] { display: none; }
.qr img:not([data-no-src]) + .qr-hint { display: none; }
.qr-hint { padding: 0 10px; }

.qr-block { display: grid; justify-items: center; gap: 10px; padding: 4px 0 20px; border-bottom: 1px solid var(--line); }
.qr-tip { margin: 0; font-size: .78rem; color: var(--ink-3); text-align: center; }

/* 电话：手机端点击直接拨号 */
.phone-link { display: inline-block; font-family: var(--serif); font-size: 1.06rem; font-weight: 700; color: var(--rust); text-decoration: none; }
.phone-link:hover { text-decoration: underline; }

/* 页脚联系方式条 */
.footer-contact {
  display: flex; flex-wrap: wrap; gap: 14px 46px;
  padding: 24px 0 4px;
}
.fc-item { display: flex; flex-direction: column; gap: 5px; text-decoration: none; padding: 0; }
a.fc-item:hover b { color: #fff; }
.fc-label { font-size: .7rem; letter-spacing: .16em; color: #7A726B; }
.fc-item b { font-family: var(--serif); font-size: 1.14rem; font-weight: 700; color: #D8D0C7; transition: color .2s var(--ease); letter-spacing: .02em; }

/* 弹窗里的客服微信二维码 */
.modal-qr {
  display: flex; gap: 18px; align-items: center;
  margin-top: 24px; padding-top: 22px; border-top: 1px solid var(--line);
}
.modal-qr-text b { display: block; font-size: .95rem; color: var(--ink); margin-bottom: 6px; }
.modal-qr-text span { font-size: .84rem; color: var(--ink-3); line-height: 1.8; }
.modal-qr-text a { color: var(--rust); font-weight: 600; }

/* 图片位：后台上传照片后替换占位内容 */
.nb-photo { display: block; width: 100%; height: 100%; object-fit: cover; }
.portrait-has-photo .portrait-inner > *:not(.nb-photo) { display: none; }
.portrait-has-photo .portrait-inner { padding: 0; gap: 0; }
.portrait-has-photo .portrait::before { display: none; }

/* 表单状态提示 */
.form-status { margin-top: 14px; font-size: .86rem; line-height: 1.7; }
.form-status.ok { color: var(--green); }
.form-status.err { color: var(--rust); }
.form-status a { color: var(--rust); font-weight: 600; }

/* ---------- 22. 滚动出现（仅在 JS 可用时启用，避免 JS 失效导致内容不可见） ---------- */
.js .reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.js .reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .js .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- 22. 响应式 ---------- */
@media (max-width: 1080px) {
  /* 导航增加到 7 项，收窄一点间距，避免 960px 以上挤到换行 */
  .nav a { padding: 9px 11px; font-size: .9rem; }
  .hero-grid { grid-template-columns: 1fr; gap: 52px; }
  .portrait { max-width: 400px; }
  .g-4 { grid-template-columns: repeat(2, 1fr); }
  .stage-grid { grid-template-columns: repeat(3, 1fr); }
  .stage-grid.cols-4 { grid-template-columns: repeat(2, 1fr); }
  .about-grid { grid-template-columns: 1fr; gap: 44px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 34px; }
}

@media (max-width: 960px) {
  .nav, .topbar .btn-sm { display: none; }
  .burger { display: block; }
  .two-col { grid-template-columns: 1fr; gap: 44px; }
  .sticky-side { position: static; }
  .g-3 { grid-template-columns: repeat(2, 1fr); }
  .split-row { grid-template-columns: 1fr; }
  .split-row .k { border-right: 0; border-bottom: 1px solid var(--line); padding-bottom: 14px; }
  .float-cta { writing-mode: horizontal-tb; right: 16px; top: auto; bottom: 20px; transform: none; padding: 0 24px; height: 52px; display: flex; align-items: center; border-radius: 999px; }
  .float-cta:hover { transform: translateY(-2px); }
}

@media (max-width: 760px) {
  .section { padding: 72px 0; }
  .section.tight { padding: 56px 0; }
  .wrap { padding: 0 20px; }
  .sec-head { margin-bottom: 36px; }
  .g-2, .g-3, .g-4 { grid-template-columns: 1fr; }
  .hero { padding: 56px 0 64px; }
  .hero-strip { grid-template-columns: repeat(2, 1fr); gap: 22px; margin-top: 48px; }
  .page-hero { padding: 52px 0 46px; }
  .flow { flex-direction: column; gap: 2px; }
  .flow-step { text-align: left; padding: 16px 0; }
  .flow-step:not(:last-child)::after { display: none; }
  .flow-step::before {
    content: ""; position: absolute; left: 6px; top: 40px; bottom: -2px; width: 1px; background: var(--line-2);
  }
  .flow-step:last-child::before { display: none; }
  .flow-step { padding-left: 26px; }
  .tri { grid-template-columns: 1fr; }
  .stage-grid { grid-template-columns: 1fr; }
  .cmp thead { display: none; }
  .cmp, .cmp tbody, .cmp tr, .cmp td { display: block; width: 100%; }
  .cmp tr { border-bottom: 1px solid var(--line); }
  .cmp td { border-bottom: 0; padding: 10px 20px; }
  .cmp td:first-child { padding-top: 20px; }
  .cmp td:last-child { padding-bottom: 20px; }
  .cmp td[data-l]:not(:first-child)::before {
    content: attr(data-l) "："; display: block;
    font-size: .72rem; font-weight: 700; letter-spacing: .1em;
    color: var(--ink-4); margin-bottom: 4px;
  }
  .form-card { padding: 30px 22px; }
  .form-row { grid-template-columns: 1fr; gap: 0; }
  .choice-grid { grid-template-columns: 1fr; }
  .modal-box { padding: 32px 22px; }
  .footer { padding: 52px 0 28px; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; padding-bottom: 34px; }
  .btn { width: 100%; }
  .btn-row { flex-direction: column; align-items: stretch; }
  .nav-cta-mobile { display: block; }
  /* 窄屏下人像角标会压住占位说明，隐藏内部提示行 */
  .portrait-inner > .tiny { display: none; }
  .portrait-inner { padding-bottom: 84px; }
  .portrait-has-photo .portrait-inner { padding-bottom: 0; }

  /* H5：联系方式与二维码 */
  .qr-lg { width: 100%; max-width: 240px; height: auto; aspect-ratio: 1; }
  .qr-block { padding-bottom: 22px; }
  .footer-contact { flex-direction: column; gap: 16px; }
  .fc-item b { font-size: 1.06rem; }
  .modal-qr { flex-direction: column; align-items: flex-start; gap: 14px; }
  .modal-qr .qr-sm { width: 132px; height: 132px; }
  /* 触控目标不小于 44px */
  .contact-ico { width: 46px; height: 46px; }
  .phone-link { padding: 4px 0; }

  /* —— 手机端紧凑化：统一收紧纵向节奏（仅 ≤760px，桌面 >760px 完全不受影响） —— */
  .section { padding: 52px 0; }
  .section.tight { padding: 40px 0; }
  .wrap { padding: 0 18px; }
  .sec-head { margin-bottom: 26px; }
  .sec-head .h2 + .lead { margin-top: 14px; }
  .eyebrow { margin-bottom: 12px; }
  .lead { line-height: 1.8; }
  .card-grid { gap: 14px; }
  .tri { gap: 14px; }
  .stage-grid { gap: 12px; }
  .hero-grid { gap: 30px; }
  .about-grid { gap: 30px; }
  .two-col { gap: 30px; }
  .hero { padding: 40px 0 46px; }
  .hero-sub { margin-top: 20px; }
  .hero-desc { margin-top: 16px; }
  .hero .btn-row { margin-top: 24px; }
  .hero-strip { grid-template-columns: repeat(2, 1fr); gap: 16px 18px; margin-top: 30px; padding-top: 22px; }
  .page-hero { padding: 40px 0 36px; }
  .crumb { margin-bottom: 16px; }
  .scene { padding: 22px 20px 20px; }
  .scene h4 { margin: 10px 0 8px; }
  .scene .flag { margin-top: 12px; }
  .pillar { padding: 26px 22px 24px; }
  .pillar-top { margin-bottom: 16px; }
  .pillar h3 { margin-bottom: 12px; }
  .svc-head { padding: 24px 22px 0; }
  .svc-body { padding: 0 22px; }
  .svc-foot { padding: 18px 22px 24px; }
  .svc-tag { margin-bottom: 12px; }
  .svc h3 { margin-bottom: 10px; }
  .cat { padding: 20px 18px; }
  .post-body { padding: 20px 20px 22px; }
  .split-row > div { padding: 16px 20px; }
  .cmp td { padding: 9px 16px; }
  .cmp td:first-child { padding-top: 16px; }
  .cmp td:last-child { padding-bottom: 16px; }
  .form-card { padding: 26px 18px; }
  .modal-box { padding: 28px 20px; }
  .footer { padding: 44px 0 22px; }
  .footer-grid { gap: 24px; padding-bottom: 26px; }
}

/* 小屏手机（≤480px）再收紧一档 */
@media (max-width: 480px) {
  .section { padding: 46px 0; }
  .section.tight { padding: 36px 0; }
  .wrap { padding: 0 16px; }
  .sec-head { margin-bottom: 22px; }
  .hero { padding: 34px 0 40px; }
  .page-hero { padding: 34px 0 32px; }
  .hero-strip { gap: 14px 16px; margin-top: 26px; }
  .card-grid { gap: 12px; }
  .scene { padding: 20px 18px 18px; }
  .pillar { padding: 24px 20px 22px; }
  .svc-head { padding: 22px 20px 0; }
  .svc-body { padding: 0 20px; }
  .svc-foot { padding: 16px 20px 22px; }
  .cat { padding: 18px 16px; }
}

@media print {
  .topbar, .float-cta, .footer, .modal { display: none; }
}