/* ============================================================
   价值营销工作室 · 设计系统
   Visual Language: 墨绿 × 金 (Ink Green × Gold)
   ============================================================ */

:root {
  /* 色彩 */
  --ink-900: #0E2A28;      /* 深墨绿 · 主深色 */
  --ink-800: #16403C;
  --ink-700: #1F5049;
  --ink-600: #2A6258;
  --gold: #C9A227;         /* 主金 */
  --gold-light: #E4C968;
  --gold-soft: #F3E7C3;
  --paper: #FAF7F0;        /* 纸感浅底 */
  --paper-2: #F3EDE0;
  --white: #FFFFFF;
  --text: #22302E;
  --text-soft: #5C6B68;
  --line: #E4DCCB;

  /* 字体 */
  --font-serif: 'Noto Serif SC', 'Songti SC', 'STSong', 'SimSun', serif;
  --font-sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;

  /* 尺寸 */
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 20px 50px -20px rgba(14, 42, 40, .25);
  --shadow-lg: 0 40px 80px -30px rgba(14, 42, 40, .35);
  --container: 1160px;
  --nav-h: 72px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--paper);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

.container { max-width: var(--container); margin: 0 auto; padding: 0 28px; }

::selection { background: var(--gold); color: var(--ink-900); }

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

/* ============ 按钮 ============ */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 14px 34px; border-radius: 999px;
  font-size: 15px; font-weight: 600; letter-spacing: .05em;
  transition: all .3s ease; cursor: pointer; border: 1.5px solid transparent;
  font-family: var(--font-sans);
}
.btn-gold {
  background: linear-gradient(135deg, var(--gold-light), var(--gold));
  color: var(--ink-900); box-shadow: 0 10px 24px -8px rgba(201, 162, 39, .55);
}
.btn-gold:hover { transform: translateY(-2px); box-shadow: 0 16px 32px -8px rgba(201, 162, 39, .7); }
.btn-ghost {
  border-color: rgba(255, 255, 255, .45); color: #fff; background: transparent;
}
.btn-ghost:hover { border-color: var(--gold); color: var(--gold-light); }
.btn-sm { padding: 10px 24px; font-size: 14px; }
.btn-block { width: 100%; }

/* ============ 导航 ============ */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--nav-h);
  transition: all .35s ease;
  background: transparent;
}
.nav.scrolled {
  background: rgba(14, 42, 40, .96);
  backdrop-filter: blur(12px);
  box-shadow: 0 6px 24px rgba(0, 0, 0, .18);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 100%; }

.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark {
  width: 42px; height: 42px; border-radius: 12px;
  background: linear-gradient(135deg, var(--gold-light), var(--gold));
  color: var(--ink-900); font-family: var(--font-serif); font-weight: 900;
  font-size: 22px; display: grid; place-items: center;
  box-shadow: 0 6px 14px -4px rgba(201, 162, 39, .6);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-text strong { color: #fff; font-size: 15px; font-family: var(--font-serif); letter-spacing: .06em; line-height: 1.35; }
.brand-text em { color: rgba(255, 255, 255, .6); font-size: 9px; letter-spacing: .22em; font-style: normal; }

.nav-links { display: flex; align-items: center; gap: 34px; }
.nav-links a {
  color: rgba(255, 255, 255, .85); font-size: 14.5px; font-weight: 500;
  position: relative; padding: 6px 2px; transition: color .25s;
}
.nav-links a::after {
  content: ''; position: absolute; left: 0; bottom: 0;
  width: 0; height: 2px; background: var(--gold); transition: width .3s;
}
.nav-links a:hover { color: var(--gold-light); }
.nav-links a:hover::after { width: 100%; }
.nav-links .nav-cta {
  background: linear-gradient(135deg, var(--gold-light), var(--gold));
  color: var(--ink-900) !important; padding: 10px 22px; border-radius: 999px;
  font-weight: 700;
}
.nav-links .nav-cta::after { display: none; }
.nav-links .nav-cta:hover { transform: translateY(-1px); }

.nav-toggle {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 8px;
}
.nav-toggle span { width: 24px; height: 2px; background: #fff; border-radius: 2px; transition: all .3s; }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============ Hero ============ */
.hero {
  position: relative; min-height: 100vh;
  background: radial-gradient(1200px 700px at 75% 20%, #1E4A42 0%, var(--ink-900) 55%, #081B1A 100%);
  display: flex; align-items: center;
  padding: calc(var(--nav-h) + 60px) 0 90px;
  overflow: hidden; color: #fff;
}
.hero-bg { position: absolute; inset: 0; pointer-events: none; }
.hero-glyph {
  position: absolute; font-family: var(--font-serif); font-weight: 900;
  color: rgba(255, 255, 255, .035); user-select: none; font-size: 260px; line-height: 1;
}
.glyph-1 { top: 8%; left: 6%; transform: rotate(-8deg); }
.glyph-2 { bottom: 4%; right: 34%; transform: rotate(6deg); }
.glyph-3 { top: 22%; right: 4%; transform: rotate(10deg); }
.glyph-4 { bottom: -6%; left: 38%; transform: rotate(-4deg); }

.hero-inner {
  position: relative; z-index: 2;
  display: grid; grid-template-columns: 1.1fr .9fr; gap: 64px; align-items: center;
}
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  color: var(--gold-light); font-size: 13.5px; letter-spacing: .3em;
  text-transform: uppercase; font-weight: 500;
  border: 1px solid rgba(201, 162, 39, .4); border-radius: 999px;
  padding: 8px 18px; margin-bottom: 26px; background: rgba(201, 162, 39, .08);
}
.hero-title {
  font-family: var(--font-serif); font-weight: 900;
  font-size: clamp(48px, 6vw, 78px); line-height: 1.18; letter-spacing: .04em;
  margin-bottom: 24px;
}
.hero-title .accent {
  background: linear-gradient(120deg, var(--gold-light), var(--gold));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-sub { font-size: 19px; color: rgba(255, 255, 255, .92); margin-bottom: 18px; }
.hero-sub strong { color: var(--gold-light); font-weight: 700; }
.hero-desc { color: rgba(255, 255, 255, .66); max-width: 480px; margin-bottom: 36px; font-size: 15.5px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 40px; }
.hero-meta { display: flex; gap: 26px; flex-wrap: wrap; }
.hero-meta span { color: rgba(255, 255, 255, .55); font-size: 13.5px; }

/* 书封面 3D */
.book3d { position: relative; width: 300px; height: 420px; margin: 0 auto; perspective: 1200px; }
.book-cover {
  position: absolute; inset: 0; border-radius: 10px 16px 16px 10px;
  background: #fff;
  border: 1px solid rgba(201, 162, 39, .35);
  box-shadow: var(--shadow-lg), inset -18px 0 30px -12px rgba(0, 0, 0, .55);
  padding: 0;
  display: block;
  overflow: hidden;
  transform: rotateY(-18deg) rotateX(3deg);
  transition: transform .6s ease;
}
.book-cover img { width: 100%; height: 100%; object-fit: contain; display: block; }
.book3d:hover .book-cover { transform: rotateY(-10deg) rotateX(2deg); }
.book-spine {
  position: absolute; left: 0; top: 0; bottom: 0; width: 26px;
  background: linear-gradient(90deg, #E9E5DA 0%, #FFFFFF 55%, #F1EDE2 100%);
  border-radius: 12px 3px 3px 12px;
  transform: rotateY(-18deg) rotateX(3deg);
  transform-origin: left;
  box-shadow: inset -4px 0 6px rgba(0, 0, 0, .10), 1px 0 2px rgba(0, 0, 0, .08);
  display: flex; align-items: center; justify-content: center;
  transition: transform .6s ease;
}
.book-spine-text {
  writing-mode: vertical-rl;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 11px;
  letter-spacing: .35em;
  color: var(--gold);
  opacity: .9;
}
.book3d:hover .book-spine { transform: rotateY(-10deg) rotateX(2deg); }
.book-cover-top { display: flex; justify-content: space-between; align-items: flex-start; }
.book-brand { font-family: var(--font-serif); font-weight: 700; color: var(--gold-light); font-size: 15px; letter-spacing: .1em; }
.book-series {
  writing-mode: vertical-rl; color: rgba(255, 255, 255, .45);
  font-size: 11px; letter-spacing: .3em; text-align: right; height: 60px;
}
.book-title { flex: 1; display: flex; flex-direction: column; justify-content: center; }
.bt-large {
  font-family: var(--font-serif); font-weight: 900; color: #fff;
  font-size: 44px; line-height: 1.25; letter-spacing: .06em;
  text-shadow: 0 2px 14px rgba(0, 0, 0, .4);
}
.book-en {
  font-size: 10px; letter-spacing: .42em; color: var(--gold); 
  border-top: 1px solid rgba(201, 162, 39, .4); padding-top: 12px; margin-top: 4px;
}
.book-author { font-family: var(--font-serif); color: rgba(255, 255, 255, .88); font-size: 16px; letter-spacing: .5em; margin-top: 14px; }
.book-foot { display: flex; align-items: center; justify-content: space-between; margin-top: 18px; }
.book-stamp {
  width: 46px; height: 46px; border-radius: 50%;
  border: 2px solid var(--gold); color: var(--gold-light);
  display: grid; place-items: center; font-family: var(--font-serif);
  font-size: 22px; font-weight: 900;
}
.book-pub { color: rgba(255, 255, 255, .45); font-size: 11px; }

.hero-book { position: relative; }
.hero-quote {
  margin: 34px auto 0; max-width: 320px; text-align: center;
  font-family: var(--font-serif); color: rgba(255, 255, 255, .8);
  font-size: 14.5px; line-height: 2; position: relative; padding: 0 10px;
}
.quote-mark { color: var(--gold); font-size: 34px; line-height: 0; vertical-align: -12px; margin-right: 6px; }
.quote-mark-end { color: var(--gold); font-size: 34px; line-height: 0; vertical-align: -12px; margin-left: 6px; }

.hero-scroll {
  position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%);
  width: 22px; height: 36px; border: 1.5px solid rgba(255, 255, 255, .35);
  border-radius: 12px;
}
.hero-scroll span {
  position: absolute; top: 7px; left: 50%; width: 3px; height: 8px;
  background: var(--gold); border-radius: 2px;
  transform: translateX(-50%); animation: scrollDot 1.8s infinite;
}
@keyframes scrollDot {
  0% { opacity: 1; transform: translate(-50%, 0); }
  100% { opacity: 0; transform: translate(-50%, 14px); }
}

/* ============ 通用 Section ============ */
.section { padding: 110px 0; }
.section-head { max-width: 760px; margin: 0 auto 70px; text-align: center; }
.section-head-light { color: #fff; }
.section-kicker {
  font-size: 12.5px; letter-spacing: .34em; text-transform: uppercase;
  color: var(--gold); font-weight: 600; margin-bottom: 16px;
}
.section-title {
  font-family: var(--font-serif); font-weight: 900;
  font-size: clamp(30px, 3.6vw, 42px); line-height: 1.35; letter-spacing: .02em;
  color: var(--ink-900); margin-bottom: 18px;
}
.section-head-light .section-title { color: #fff; }
.section-head-light .section-desc { color: rgba(255, 255, 255, .68); }
.accent { color: var(--gold-light); }
.accent-dark { color: var(--gold); }
.section-desc { color: var(--text-soft); font-size: 16px; }

/* ============ 核心理念 ============ */
.philosophy { background: var(--paper); }
.philosophy-grid {
  display: grid; grid-template-columns: 1fr auto 1fr; gap: 40px; align-items: stretch;
  max-width: 980px; margin: 0 auto 80px;
}
.ph-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 36px 32px; box-shadow: var(--shadow); position: relative;
}
.ph-card-accent {
  background: linear-gradient(160deg, var(--ink-800), var(--ink-900));
  color: #fff; border-color: transparent;
}
.ph-arrow { font-size: 20px; color: var(--gold); font-weight: 700; margin-bottom: 12px; }
.ph-card h3 { font-family: var(--font-serif); font-size: 24px; margin-bottom: 12px; letter-spacing: .04em; }
.ph-card p { font-size: 14.5px; opacity: .85; margin-bottom: 18px; }
.ph-list li {
  font-size: 13.5px; padding: 7px 0 7px 22px; position: relative; opacity: .8;
  border-top: 1px dashed rgba(127, 141, 137, .3);
}
.ph-list li::before {
  content: '✦'; position: absolute; left: 0; color: var(--gold); font-size: 11px; top: 9px;
}
.ph-card-accent .ph-list li { border-top-color: rgba(255, 255, 255, .12); }
.ph-divider { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px; }
.ph-line { width: 2px; height: 46px; background: linear-gradient(var(--line), var(--gold)); border-radius: 2px; }
.ph-line:last-child { background: linear-gradient(var(--gold), var(--line)); }
.ph-arrow-big { font-size: 26px; color: var(--gold); font-weight: 900; animation: nudge 1.6s ease-in-out infinite; }
@keyframes nudge {
  0%, 100% { transform: translateX(0); }
  50% { transform: translateX(6px); }
}

/* 价值要素金字塔 */
.pyramid {
  max-width: 640px; margin: 0 auto; text-align: center; position: relative;
}
.pyramid-label {
  font-size: 12.5px; letter-spacing: .3em; color: var(--gold);
  text-transform: uppercase; font-weight: 600; margin-bottom: 18px;
}
.pyramid-level {
  margin: 6px auto; padding: 15px 0; border-radius: 12px;
  font-family: var(--font-serif); font-size: 16.5px; font-weight: 700; letter-spacing: .3em;
  color: #fff; transition: transform .3s ease;
}
.pyramid-level:hover { transform: scale(1.02); }
.lv1 { width: 22%; background: var(--gold); color: var(--ink-900); }
.lv2 { width: 42%; background: var(--ink-700); }
.lv3 { width: 62%; background: var(--ink-600); }
.lv4 { width: 82%; background: var(--ink-800); }

/* ============ 五力模型 ============ */
.forces {
  background: linear-gradient(160deg, var(--ink-900), var(--ink-800));
  color: #fff; position: relative; overflow: hidden;
}
.forces::before {
  content: ''; position: absolute; width: 500px; height: 500px; border-radius: 50%;
  background: radial-gradient(circle, rgba(201, 162, 39, .14), transparent 65%);
  top: -180px; right: -140px;
}
.forces::after {
  content: ''; position: absolute; width: 400px; height: 400px; border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 255, 255, .05), transparent 65%);
  bottom: -140px; left: -120px;
}
.forces .container { position: relative; z-index: 1; }
.forces-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.force-card {
  background: rgba(255, 255, 255, .05);
  border: 1px solid rgba(255, 255, 255, .12);
  border-radius: var(--radius); padding: 34px 28px;
  backdrop-filter: blur(6px);
  transition: all .35s ease; position: relative; overflow: hidden;
}
.force-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--gold), transparent); opacity: 0; transition: opacity .35s;
}
.force-card:hover {
  transform: translateY(-6px); background: rgba(255, 255, 255, .09);
  border-color: rgba(201, 162, 39, .5);
}
.force-card:hover::before { opacity: 1; }
.force-num {
  font-family: var(--font-serif); font-size: 13px; color: var(--gold);
  letter-spacing: .2em; margin-bottom: 14px;
}
.force-icon { font-size: 34px; margin-bottom: 16px; }
.force-card h3 { font-family: var(--font-serif); font-size: 22px; margin-bottom: 10px; letter-spacing: .06em; }
.force-card p { font-size: 14px; color: rgba(255, 255, 255, .68); line-height: 1.8; }
.force-card-cta {
  display: flex; flex-direction: column; justify-content: center; align-items: flex-start; gap: 18px;
  background: linear-gradient(135deg, rgba(201, 162, 39, .16), rgba(201, 162, 39, .05));
  border-color: rgba(201, 162, 39, .4);
}
.force-cta-label { font-family: var(--font-serif); font-size: 18px; color: var(--gold-light) !important; line-height: 1.6 !important; }

/* ============ 书籍展示 ============ */
.book { background: var(--paper-2); }
.book-inner {
  display: grid; grid-template-columns: .85fr 1.15fr; gap: 72px; align-items: center;
}
.book-lg { width: 340px; height: 476px; }
.book-copy .section-kicker { margin-bottom: 14px; }
.book-chapters { margin: 28px 0 30px; }
.book-chapters li {
  display: flex; align-items: baseline; gap: 14px;
  padding: 10px 0; font-size: 15px; color: var(--text-soft);
  border-bottom: 1px dashed var(--line);
}
.book-chapters li span {
  font-family: var(--font-serif); color: var(--gold); font-weight: 700;
  font-size: 14px; min-width: 26px;
}
.book-quotes blockquote {
  font-family: var(--font-serif); font-size: 15.5px; color: var(--ink-900);
  padding: 10px 0 10px 20px; border-left: 3px solid var(--gold);
  margin-bottom: 12px; line-height: 1.9;
}

/* ============ 课程地图 ============ */
.course-map { background: var(--paper); }
.course-map-wrap {
  max-width: 520px; margin: 0 auto;
  position: relative; border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--line);
}
.course-map-link {
  display: block; position: relative;
  background: #fff;
}
.course-map-link img {
  display: block; width: 100%; height: auto;
  transition: transform .5s ease;
}
.course-map-link:hover img { transform: scale(1.02); }
.course-map-badge {
  position: absolute; bottom: 16px; right: 16px;
  background: rgba(14, 42, 40, .88); color: var(--gold-light);
  font-size: 12.5px; font-weight: 600; letter-spacing: .04em;
  padding: 7px 16px; border-radius: 999px;
  backdrop-filter: blur(6px);
  box-shadow: 0 4px 12px rgba(0,0,0,.2);
  transition: all .25s ease;
  display: flex; align-items: center; gap: 6px;
}
.course-map-badge::before {
  content: ''; width: 6px; height: 6px; border-radius: 50%;
  background: var(--gold); animation: pulse 1.6s ease infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: .4; transform: scale(.6); }
}

/* ============ 作者 ============ */
.author { background: var(--paper); }
.author-inner {
  display: grid; grid-template-columns: .8fr 1.2fr; gap: 72px; align-items: center;
}
.portrait-frame { position: relative; width: 300px; height: 380px; margin: 0 auto; }
.portrait-circle {
  position: absolute; inset: 0;
  background: radial-gradient(circle at 30% 25%, var(--ink-700), var(--ink-900));
  border-radius: 50%;
  display: grid; place-items: center;
  box-shadow: var(--shadow-lg);
}
.portrait-char {
  font-family: var(--font-serif); font-weight: 900;
  font-size: 120px; color: rgba(255, 255, 255, .12); letter-spacing: .1em;
  user-select: none;
}
.portrait-img {
  width: 100%; height: 100%; object-fit: cover;
  border-radius: 50%; display: block;
}
.portrait-ring {
  position: absolute; inset: -18px; border-radius: 50%;
  border: 1.5px dashed rgba(201, 162, 39, .5); animation: spin 24s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.portrait-badge {
  position: absolute; right: -12px; bottom: 26px;
  background: linear-gradient(135deg, var(--gold-light), var(--gold));
  color: var(--ink-900); border-radius: 14px; padding: 12px 16px;
  font-family: var(--font-serif); font-weight: 700; text-align: center;
  font-size: 13.5px; line-height: 1.6; box-shadow: 0 14px 30px -8px rgba(201, 162, 39, .6);
}
.author-points { margin-top: 30px; }
.author-points li {
  display: flex; align-items: flex-start; gap: 14px;
  padding: 11px 0; font-size: 15.5px; color: var(--text);
  border-bottom: 1px dashed var(--line);
}
.author-points li span { font-size: 18px; }

/* ============ 服务 ============ */
.services { background: var(--paper-2); }
.services-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px;
}
.service-card {
  background: #fff; border-radius: var(--radius); padding: 40px 36px;
  border: 1px solid var(--line); box-shadow: var(--shadow);
  position: relative; overflow: hidden; transition: all .35s ease;
}
.service-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.service-card::after {
  content: ''; position: absolute; right: -60px; top: -60px;
  width: 180px; height: 180px; border-radius: 50%;
  background: radial-gradient(circle, rgba(201, 162, 39, .1), transparent 70%);
  transition: transform .4s;
}
.service-card:hover::after { transform: scale(1.4); }
.service-tag {
  display: inline-block; font-size: 12px; font-weight: 600; letter-spacing: .12em;
  color: var(--ink-700); background: var(--gold-soft);
  border: 1px solid rgba(201, 162, 39, .35);
  border-radius: 999px; padding: 5px 14px; margin-bottom: 18px;
}
.service-card h3 { font-family: var(--font-serif); font-size: 22px; margin-bottom: 10px; color: var(--ink-900); }
.service-card > p { font-size: 14.5px; color: var(--text-soft); margin-bottom: 18px; }
.service-card ul { margin-bottom: 22px; }
.service-card ul li {
  font-size: 13.5px; color: var(--text-soft); padding: 5px 0 5px 20px; position: relative;
}
.service-card ul li::before { content: '✓'; position: absolute; left: 0; color: var(--gold); font-weight: 700; }
.service-link {
  font-weight: 700; font-size: 14.5px; color: var(--ink-900);
  border-bottom: 2px solid var(--gold); padding-bottom: 2px; transition: color .25s;
}
.service-link:hover { color: var(--gold); }

/* ============ 合作流程 ============ */
.process { background: linear-gradient(160deg, var(--ink-900), var(--ink-800)); color: #fff; }
.process-steps {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px;
}
.process-step {
  position: relative; padding: 34px 28px;
  background: rgba(255, 255, 255, .05);
  border: 1px solid rgba(255, 255, 255, .12);
  border-radius: var(--radius); transition: all .3s;
}
.process-step:hover { transform: translateY(-5px); border-color: rgba(201, 162, 39, .5); }
.step-num {
  font-family: var(--font-serif); font-weight: 900;
  font-size: 42px; color: transparent; -webkit-text-stroke: 1.5px var(--gold);
  margin-bottom: 14px; line-height: 1;
}
.process-step h3 { font-family: var(--font-serif); font-size: 19px; margin-bottom: 8px; letter-spacing: .05em; }
.process-step p { font-size: 13.5px; color: rgba(255, 255, 255, .65); }

/* ============ 金句横幅 ============ */
.quote-banner {
  background: linear-gradient(135deg, var(--gold-light), var(--gold));
  color: var(--ink-900); overflow: hidden; padding: 18px 0;
  white-space: nowrap; position: relative;
}
.quote-banner-track {
  display: inline-block; animation: marquee 30s linear infinite;
  font-family: var(--font-serif); font-weight: 700; font-size: 15px; letter-spacing: .12em;
}
.quote-banner-track span { margin: 0 18px; }
@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ============ 联系 ============ */
.contact { background: var(--paper); }
.contact-inner {
  display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start;
}
.contact-copy .section-title { margin-bottom: 20px; }
.contact-copy .section-desc { margin-bottom: 36px; max-width: 420px; }
.contact-info { display: flex; flex-direction: column; gap: 22px; }
.ci-item { display: flex; gap: 16px; align-items: flex-start; }
.ci-icon {
  width: 46px; height: 46px; border-radius: 12px; flex-shrink: 0;
  background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow);
  display: grid; place-items: center; font-size: 20px;
}
.ci-item strong { font-family: var(--font-serif); font-size: 15px; color: var(--ink-900); }
.ci-item p { font-size: 13.5px; color: var(--text-soft); margin-top: 2px; }
.ci-item .email-link { color: var(--ink-700); font-weight: 600; border-bottom: 1px dashed var(--gold); transition: color .25s; }
.ci-item .email-link:hover { color: var(--gold); }

.contact-form {
  background: #fff; border-radius: 20px; padding: 40px 36px;
  border: 1px solid var(--line); box-shadow: var(--shadow-lg);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-field { margin-bottom: 18px; }
.form-field label { display: block; font-size: 13px; font-weight: 600; color: var(--ink-900); margin-bottom: 7px; }
.form-field input, .form-field select, .form-field textarea {
  width: 100%; padding: 12px 16px; border-radius: var(--radius-sm);
  border: 1.5px solid var(--line); background: var(--paper);
  font-family: var(--font-sans); font-size: 14.5px; color: var(--text);
  transition: all .25s; outline: none;
}
.form-field input:focus, .form-field select:focus, .form-field textarea:focus {
  border-color: var(--gold); background: #fff;
  box-shadow: 0 0 0 3px rgba(201, 162, 39, .15);
}
.form-field textarea { resize: vertical; min-height: 90px; }
.form-tip { font-size: 12px; color: var(--text-soft); text-align: center; margin-top: 14px; }
.form-success {
  display: none; text-align: center; padding: 50px 20px; color: var(--ink-700);
}
.form-success .fs-icon {
  width: 72px; height: 72px; margin: 0 auto 20px; border-radius: 50%;
  background: linear-gradient(135deg, var(--gold-light), var(--gold));
  display: grid; place-items: center; font-size: 34px; color: var(--ink-900);
}
.form-success h3 { font-family: var(--font-serif); font-size: 22px; margin-bottom: 8px; }
.form-success p { font-size: 14.5px; color: var(--text-soft); }
.mail-preview {
  margin: 22px auto 8px; max-width: 520px; text-align: left;
  background: var(--paper); border: 1px dashed var(--gold);
  border-radius: var(--radius-sm); padding: 16px 18px;
  font-size: 13px; line-height: 1.8; color: var(--ink-700);
  white-space: pre-wrap; word-break: break-all; max-height: 200px; overflow: auto;
}
.success-actions { display: flex; gap: 14px; justify-content: center; margin-top: 18px; flex-wrap: wrap; }
.success-actions .btn { min-width: 160px; }
.contact-form.submitted .contact-form-inner { display: none; }
.contact-form.submitted .form-success { display: block; }

/* ============ 页脚 ============ */
.footer { background: #081B1A; color: rgba(255, 255, 255, .6); padding: 48px 0 36px; }
.footer-inner { display: flex; flex-direction: column; gap: 18px; align-items: center; text-align: center; }
.footer-brand { display: flex; align-items: center; gap: 12px; }
.footer-brand .brand-mark { width: 38px; height: 38px; font-size: 19px; }
.footer-brand strong { color: #fff; font-family: var(--font-serif); font-size: 14.5px; display: block; letter-spacing: .06em; line-height: 1.4; }
.footer-brand em { font-size: 9px; letter-spacing: .22em; font-style: normal; color: rgba(255, 255, 255, .4); }
.footer-quote { font-family: var(--font-serif); font-size: 13.5px; color: rgba(255, 255, 255, .5); }
.footer-copy { font-size: 12px; color: rgba(255, 255, 255, .35); }

/* ============ 滚动显现动画 ============ */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .8s ease, transform .8s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal.d1 { transition-delay: .1s; }
.reveal.d2 { transition-delay: .2s; }
.reveal.d3 { transition-delay: .3s; }

/* ============ 响应式 ============ */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; gap: 56px; text-align: center; }
  .hero-copy { display: flex; flex-direction: column; align-items: center; }
  .hero-desc { margin-left: auto; margin-right: auto; }
  .hero-meta { justify-content: center; }
  .hero-quote { margin-top: 44px; }
  .forces-grid { grid-template-columns: repeat(2, 1fr); }
  .book-inner, .author-inner, .contact-inner { grid-template-columns: 1fr; gap: 56px; }
  .process-steps { grid-template-columns: repeat(2, 1fr); }
  .philosophy-grid { grid-template-columns: 1fr; gap: 20px; max-width: 560px; }
  .ph-divider { flex-direction: row; }
  .ph-line { width: 46px; height: 2px; }
  .ph-line:last-child { background: linear-gradient(90deg, var(--gold), var(--line)); }
  .ph-line { background: linear-gradient(90deg, var(--line), var(--gold)); }
}

@media (max-width: 1024px) {
  .brand-text strong { font-size: 14px; letter-spacing: .02em; }
  .nav-links { gap: 20px; }
  .nav-links a { font-size: 13.5px; }
  .nav-links .nav-cta { padding: 9px 16px; }
}

@media (max-width: 768px) {
  .section { padding: 84px 0; }
  .nav-links {
    position: fixed; top: var(--nav-h); right: 0; bottom: 0;
    width: min(320px, 82vw); background: var(--ink-900);
    flex-direction: column; align-items: flex-start; gap: 8px;
    padding: 40px 32px; transform: translateX(100%); transition: transform .35s ease;
    box-shadow: -20px 0 50px rgba(0, 0, 0, .3);
  }
  .nav-links.open { transform: translateX(0); }
  .nav-links a { font-size: 16px; padding: 10px 0; width: 100%; }
  .nav-links .nav-cta { margin-top: 12px; text-align: center; }
  .nav-toggle { display: flex; }
  .forces-grid, .services-grid { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .book3d, .book-lg { width: 250px; height: 350px; }
  .bt-large { font-size: 36px; }
  .mobile-only { display: block; }
  .hero-title { font-size: 42px; }
  .hero-scroll { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  html { scroll-behavior: auto; }
}