/* ========================================================================
   WIS 官网 · 全站统一样式
   规则：黑底白字 / Times New Roman + 尚古黑体 / 全 weight 400 / 无斜体
   2026-05-02 重写为统一深色版
   ======================================================================== */

/* ========== 中文品牌字体：尚古黑体 ========== */
@font-face {
  font-family: 'ShangguSans';
  src: url('fonts/ShangguSans-Regular.otf') format('opentype');
  font-weight: 400; font-display: swap;
}
@font-face {
  font-family: 'ShangguSans';
  src: url('fonts/ShangguSans-Medium.otf') format('opentype');
  font-weight: 500; font-display: swap;
}

/* ========== RESET & TOKENS ========== */
* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
  --bg:        #000000;
  --bg-soft:   #0A0A0A;
  --bg-card:   #111111;
  --text:      #FFFFFF;
  --text-mute: rgba(255,255,255,0.65);
  --text-dim:  rgba(255,255,255,0.45);
  --border:    rgba(255,255,255,0.12);
  --border-st: rgba(255,255,255,0.22);
  --accent:    #A100FF;

  --font: 'Times New Roman', Times, 'ShangguSans', 'PingFang SC', 'Microsoft YaHei', serif;

  --ease: cubic-bezier(0.85, 0, 0, 1);

  /* Legacy aliases — 让旧 HTML 里 inline style 引用 var(--black)/--gray/--light 时不会断 */
  --black: var(--bg);
  --gray: var(--text-mute);
  --light: var(--bg-soft);
}

html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  font-size: 18px;
  line-height: 1.6;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
}

/* ========== Home Light Theme (index only) ========== */
body.home-light {
  --bg: #ffffff;
  --bg-soft: #fbf9ff;
  --bg-card: #ffffff;
  --text: #111111;
  --text-mute: rgba(17,17,17,0.72);
  --text-dim: rgba(17,17,17,0.5);
  --border: rgba(17,17,17,0.14);
  --border-st: rgba(17,17,17,0.24);
  --accent: #8f45df;
  --black: var(--bg);
  --gray: var(--text-mute);
  --light: var(--bg-soft);
  background-color: #ffffff;
  background-image:
    radial-gradient(820px 540px at 88% 24%, rgba(143,69,223,0.22) 0%, rgba(143,69,223,0.14) 16%, rgba(143,69,223,0.07) 34%, rgba(143,69,223,0.02) 50%, rgba(143,69,223,0) 72%),
    radial-gradient(620px 420px at 82% 2%, rgba(198,164,255,0.22) 0%, rgba(198,164,255,0.09) 30%, rgba(198,164,255,0) 66%);
  background-repeat: no-repeat;
  color: var(--text);
}
body.home-light .site-header {
  background: rgba(255,255,255,0.88);
  border-bottom-color: rgba(17,17,17,0.14);
}
body.home-light .preview-banner {
  background: rgba(255,255,255,0.92);
}
body.home-light .hero::before {
  background: radial-gradient(circle, rgba(143,69,223,0.14) 0%, rgba(143,69,223,0.08) 24%, rgba(143,69,223,0) 62%);
}
body.home-light footer.site-footer::after {
  color: rgba(17,17,17,0.035);
}
.container { max-width: 1280px; margin: 0 auto; padding: 0 48px; }
.container-narrow { max-width: 880px; margin: 0 auto; padding: 0 48px; }

a { color: inherit; text-decoration: none; transition: color 0.3s var(--ease); }

/* ========== HEADER ========== */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(0,0,0,0.85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  padding: 18px 0;
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  max-width: 1280px; margin: 0 auto; padding: 0 48px;
}
.logo-block { display: flex; flex-direction: column; gap: 2px; }
.logo {
  font-size: 20px; letter-spacing: -0.4px; color: var(--text);
  font-weight: 400;
}
.logo .dot { color: var(--accent); }
.tagline { font-size: 12px; color: var(--text-mute); letter-spacing: 0.3px; }
.logo-image-link {
  display: inline-flex;
  align-items: center;
  line-height: 0;
}
.site-logo {
  display: block;
  height: 44px;
  width: auto;
}
@media (max-width: 1024px) {
  .site-logo { height: 38px; }
}
@media (max-width: 768px) {
  .site-logo { height: 32px; }
}
nav.main-nav { display: flex; gap: 36px; }
nav.main-nav a {
  color: var(--text); font-size: 15px;
  padding: 6px 0; border-bottom: 1px solid transparent;
  transition: color 0.3s var(--ease), border-color 0.3s var(--ease);
}
nav.main-nav a:hover { color: var(--text-mute); }
nav.main-nav a.active { border-bottom-color: var(--accent); color: var(--accent); }
.header-right { display: flex; align-items: center; gap: 16px; }
.lang-switch button {
  background: transparent; border: 1px solid var(--border-st);
  color: var(--text); padding: 7px 12px; font-size: 13px; cursor: pointer;
  border-radius: 0; font-family: inherit;
  transition: all 0.3s var(--ease);
}
.lang-switch button.active { background: var(--text); color: var(--bg); border-color: var(--text); }
.lang-switch button:hover:not(.active) { border-color: var(--text); }
.cta-button {
  background: var(--text); color: var(--bg); border: 1px solid var(--text);
  padding: 13px 26px; font-size: 14px; cursor: pointer; border-radius: 0;
  font-family: inherit; text-decoration: none; display: inline-block;
  letter-spacing: 0.3px; transition: all 0.3s var(--ease);
}
.cta-button:hover { background: var(--accent); border-color: var(--accent); color: var(--text); }

/* ========== PAGE HERO（其他页用） ========== */
.page-hero { padding: 100px 0 80px; border-bottom: 1px solid var(--border); }
.breadcrumb { font-size: 13px; color: var(--text-mute); margin-bottom: 32px; }
.breadcrumb a { color: var(--text-mute); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { margin: 0 8px; color: var(--text-dim); }
.page-hero h1 {
  font-size: clamp(40px, 6vw, 80px); line-height: 1.05;
  letter-spacing: -2px; margin-bottom: 28px; max-width: 1000px;
  color: var(--text); font-weight: 400;
}
.page-hero .lead {
  font-size: clamp(18px, 1.5vw, 22px); color: var(--text-mute);
  max-width: 760px; line-height: 1.6;
}

/* ========== INDEX HERO ========== */
.hero {
  padding: 140px 0 160px;
  border-bottom: 1px solid var(--border);
  position: relative; overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute; top: 0; right: -250px; width: 800px; height: 800px;
  background: radial-gradient(circle, rgba(161,0,255,0.18) 0%, transparent 60%);
  pointer-events: none;
}
.hero-tag {
  display: inline-block; font-size: 16px; color: var(--accent);
  letter-spacing: 0.5px; margin-bottom: 40px;
  border-left: 2px solid var(--accent); padding-left: 14px;
}
.hero h1 {
  font-size: clamp(64px, 11vw, 144px); line-height: 0.98;
  letter-spacing: -3.5px; margin-bottom: 48px;
  color: var(--text); max-width: 1100px; font-weight: 400;
}
.hero h1 .accent { color: var(--accent); }
body:not(.lang-en) .hero h1 { letter-spacing: -2px; line-height: 1.04; }
.hero-sub {
  font-size: clamp(20px, 2vw, 24px); color: var(--text-mute);
  line-height: 1.5; max-width: 760px; margin-bottom: 24px;
}
.hero-body {
  font-size: clamp(17px, 1.3vw, 20px); color: var(--text-mute);
  max-width: 720px; margin-bottom: 24px; line-height: 1.7;
}
.hero-body strong { color: var(--text); border-bottom: 1px solid var(--accent); font-weight: 400; }
.hero-cta { display: flex; gap: 16px; margin-top: 56px; flex-wrap: wrap; }

/* ========== BUTTONS ========== */
.btn-primary {
  background: var(--text); color: var(--bg); border: 1px solid var(--text);
  padding: 18px 36px; font-size: 15px; cursor: pointer; border-radius: 0;
  text-decoration: none; display: inline-block; font-family: inherit;
  transition: all 0.3s var(--ease); letter-spacing: 0.3px;
}
.btn-primary:hover { background: var(--accent); color: var(--text); border-color: var(--accent); }
.btn-secondary {
  background: transparent; color: var(--text); border: 1px solid var(--text);
  padding: 18px 36px; font-size: 15px; cursor: pointer; border-radius: 0;
  text-decoration: none; display: inline-block; font-family: inherit;
  transition: all 0.3s var(--ease); letter-spacing: 0.3px;
}
.btn-secondary:hover { background: var(--text); color: var(--bg); }

/* ========== SECTIONS ========== */
section { padding: 120px 0; border-bottom: 1px solid var(--border); }
section:last-of-type { border-bottom: none; }
.section-label {
  font-size: 12px; color: var(--accent);
  letter-spacing: 2px; text-transform: uppercase; margin-bottom: 28px;
  display: inline-block; border-top: 1px solid var(--accent); padding-top: 12px;
  font-weight: 400;
}
h2 {
  font-size: clamp(40px, 6.5vw, 88px); line-height: 1.04;
  letter-spacing: -2px; margin-bottom: 36px; max-width: 1000px;
  color: var(--text); font-weight: 400;
}
h2 .accent { color: var(--accent); }
body:not(.lang-en) h2 { letter-spacing: -1px; }
h3 { font-size: 28px; line-height: 1.2; margin-bottom: 16px; color: var(--text); font-weight: 400; }
.section-intro {
  font-size: clamp(18px, 1.4vw, 22px); color: var(--text-mute);
  max-width: 760px; margin-bottom: 80px; line-height: 1.6;
}

/* ========== BRAND MARK ========== */
.brand-mark {
  text-align: center; padding: 96px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.brand-mark .quote-en {
  font-size: clamp(28px, 4vw, 48px); color: var(--text);
  letter-spacing: -1px; margin-bottom: 16px; line-height: 1.1; font-weight: 400;
}
.brand-mark .quote-zh {
  font-size: clamp(22px, 2.5vw, 32px); color: var(--text);
  letter-spacing: 8px; font-weight: 400;
}
.brand-mark .accent-line { width: 56px; height: 2px; background: var(--accent); margin: 28px auto; }

/* ========== HOOK CARDS ========== */
.hooks {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 0; border: 1px solid var(--border);
}
.hook-card {
  padding: 40px 28px; min-height: 280px;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  display: flex; flex-direction: column; justify-content: space-between;
  transition: background 0.4s var(--ease);
}
.hook-card:hover { background: var(--bg-soft); }
.hook-card .index { color: var(--accent); font-size: 28px; margin-bottom: 24px; line-height: 1; font-weight: 400; }
.hook-card h3 { font-size: 22px; line-height: 1.3; margin-bottom: 16px; color: var(--text); font-weight: 400; }
.hook-card p { font-size: 14px; color: var(--text-mute); margin-bottom: 24px; line-height: 1.55; }
.hook-card .read-more { font-size: 13px; color: var(--accent); margin-top: auto; letter-spacing: 0.3px; }

/* ========== METHOD CARDS ========== */
.method-five {
  display: grid; grid-template-columns: repeat(5, 1fr); gap: 0;
  margin-top: 56px; border-top: 1px solid var(--border);
}
@media (max-width: 900px) { .method-five { grid-template-columns: repeat(2, 1fr); } }
.method-card {
  padding: 56px 32px 64px;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  transition: background 0.4s var(--ease);
}
.method-card:hover { background: var(--bg-soft); }
.method-card .num {
  font-size: 96px; color: var(--accent); line-height: 1;
  margin-bottom: 28px; letter-spacing: -3px; font-weight: 400;
}
.method-card h4 { font-size: 22px; margin-bottom: 14px; letter-spacing: -0.3px; color: var(--text); font-weight: 400; }
.method-card p { font-size: 14px; color: var(--text-mute); line-height: 1.5; }

/* ========== RESEARCH REPORTS (4×2 grid) ========== */
.reports-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 0;
  margin-top: 32px; border: 1px solid var(--border);
}
@media (max-width: 1100px) { .reports-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px)  { .reports-grid { grid-template-columns: 1fr; } }
.report-card {
  padding: 40px 28px; min-height: 280px;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  display: flex; flex-direction: column;
  transition: background 0.4s var(--ease);
  color: var(--text);
}
.report-card:nth-child(4n) { border-right: none; }
.report-card:nth-last-child(-n+4) { border-bottom: none; }
@media (max-width: 1100px) {
  .report-card:nth-child(4n) { border-right: 1px solid var(--border); }
  .report-card:nth-child(2n) { border-right: none; }
  .report-card:nth-last-child(-n+4) { border-bottom: 1px solid var(--border); }
  .report-card:nth-last-child(-n+2) { border-bottom: none; }
}
@media (max-width: 600px) {
  .report-card { border-right: none !important; border-bottom: 1px solid var(--border) !important; }
  .report-card:last-child { border-bottom: none !important; }
}
.report-card:hover { background: var(--bg-soft); }
.report-card .num { font-size: 14px; color: var(--text-dim); letter-spacing: 1px; margin-bottom: 28px; }
.report-card .title {
  font-size: 20px; color: var(--text); line-height: 1.3;
  letter-spacing: -0.3px; margin-bottom: 32px; flex-grow: 1;
}
.report-card:hover .title { color: var(--accent); }
.report-card .arrow { font-size: 13px; color: var(--text-dim); letter-spacing: 0.5px; margin-top: auto; }
.report-card:hover .arrow { color: var(--accent); }

/* ========== SERVICES ========== */
.services-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 0;
  margin-top: 56px; border: 1px solid var(--border);
}
@media (max-width: 768px) { .services-grid { grid-template-columns: 1fr; } }
.service-card {
  padding: 56px 48px;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  transition: background 0.4s var(--ease);
  position: relative; text-decoration: none; color: inherit; display: block;
}
.service-card:nth-child(2n) { border-right: none; }
.service-card:nth-last-child(-n+2) { border-bottom: none; }
@media (max-width: 768px) {
  .service-card { border-right: none; border-bottom: 1px solid var(--border); }
  .service-card:last-child { border-bottom: none; }
}
.service-card:hover { background: var(--bg-soft); }
.service-card.recommend { border-top: 4px solid var(--accent); }
.service-card.recommend::before {
  content: '推薦 · Recommended';
  position: absolute; top: 0; right: 0;
  background: var(--accent); color: var(--text);
  padding: 6px 16px; font-size: 11px; letter-spacing: 1px; text-transform: uppercase;
}
.service-card h3 { font-size: 28px; margin-bottom: 18px; letter-spacing: -0.5px; color: var(--text); font-weight: 400; }
.service-card .price { color: var(--accent); font-size: 16px; margin-bottom: 28px; letter-spacing: 0.3px; }
.service-card p { color: var(--text-mute); margin-bottom: 32px; line-height: 1.6; font-size: 16px; }
.service-card .learn-more {
  font-size: 14px; color: var(--text);
  border-bottom: 1px solid var(--text); padding-bottom: 4px;
  transition: color 0.3s var(--ease), border-color 0.3s var(--ease);
}
.service-card:hover .learn-more { color: var(--accent); border-bottom-color: var(--accent); }

/* ========== INDUSTRIES ========== */
.industries-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0; border: 1px solid var(--border);
}
.industry-card {
  padding: 40px 28px;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  transition: background 0.4s var(--ease);
  text-decoration: none; color: inherit; display: block;
}
.industry-card:hover { background: var(--bg-soft); }
.industry-card h4 { font-size: 22px; margin-bottom: 14px; color: var(--text); font-weight: 400; letter-spacing: -0.3px; }
.industry-card p { font-size: 14px; color: var(--text-mute); line-height: 1.55; }

/* ========== CASES ========== */
.cases-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 0;
  margin-top: 56px; border-top: 1px solid var(--border);
}
@media (max-width: 900px) { .cases-grid { grid-template-columns: 1fr; } }
.case-card {
  padding: 48px 32px;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  transition: background 0.4s var(--ease);
}
.case-card:last-child { border-right: none; }
@media (max-width: 900px) { .case-card { border-right: none; } }
.case-card:hover { background: var(--bg-soft); }
.case-card .case-tag {
  display: inline-block; font-size: 11px; color: var(--text-dim);
  margin-bottom: 20px; padding: 4px 10px;
  border: 1px solid var(--border-st); letter-spacing: 1px; text-transform: uppercase;
}
.case-card h4 { font-size: 24px; margin-bottom: 18px; letter-spacing: -0.4px; line-height: 1.3; color: var(--text); font-weight: 400; }
.case-card p { color: var(--text-mute); margin-bottom: 20px; font-size: 15px; line-height: 1.6; }
.case-card .metrics {
  display: flex; gap: 32px; margin-top: 28px; padding-top: 28px;
  border-top: 1px solid var(--border);
}
.case-card .metric { font-size: 13px; color: var(--text-dim); }
.case-card .metric .num {
  display: block; font-size: 40px; color: var(--accent);
  letter-spacing: -1px; line-height: 1; margin-bottom: 6px; font-weight: 400;
}

/* ========== TRUST WALL ========== */
.trust-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 0;
  margin-top: 64px; border-top: 1px solid var(--border);
}
@media (max-width: 900px) { .trust-grid { grid-template-columns: 1fr; } }
.trust-item {
  padding: 48px 32px 48px 0;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.trust-item:nth-child(3n) { border-right: none; padding-right: 0; }
.trust-item h5 {
  font-size: 12px; color: var(--accent); margin-bottom: 18px;
  text-transform: uppercase; letter-spacing: 2px; font-weight: 400;
}
.trust-item p { font-size: 18px; color: var(--text); line-height: 1.55; font-weight: 400; }

/* ========== INSIGHTS / FLAGSHIP ========== */
.flagship-report {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  padding: 80px 64px;
  margin-bottom: 56px;
  position: relative; overflow: hidden;
}
.flagship-report::after {
  content: '2026'; position: absolute; right: -40px; bottom: -80px;
  font-size: 320px; color: rgba(255,255,255,0.03);
  line-height: 1; pointer-events: none; font-weight: 400;
}
.flagship-report .label {
  color: var(--accent); font-size: 12px;
  letter-spacing: 2px; text-transform: uppercase; margin-bottom: 28px;
  border-top: 1px solid var(--accent); padding-top: 12px;
  display: inline-block; font-weight: 400;
}
.flagship-report h3 {
  font-size: clamp(28px, 4vw, 56px); line-height: 1.05;
  margin-bottom: 28px; color: var(--text); max-width: 920px;
  font-weight: 400; letter-spacing: -1.5px; position: relative; z-index: 1;
}
.flagship-report p {
  color: var(--text-mute); margin-bottom: 36px; max-width: 720px;
  font-size: 19px; line-height: 1.65; position: relative; z-index: 1;
}
.flagship-report .btn-primary {
  background: var(--accent); border-color: var(--accent); color: var(--text);
  position: relative; z-index: 1;
}
.flagship-report .btn-primary:hover { background: var(--text); color: var(--bg); border-color: var(--text); }

.insights-list {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 0;
  border: 1px solid var(--border);
}
@media (max-width: 900px) { .insights-list { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 500px) { .insights-list { grid-template-columns: 1fr; } }
.insight-link {
  padding: 36px 28px; min-height: 200px;
  border-right: 1px solid var(--border); color: var(--text);
  display: flex; flex-direction: column; justify-content: space-between;
  transition: background 0.4s var(--ease);
}
.insight-link:last-child { border-right: none; }
.insight-link:hover { background: var(--bg-soft); }
.insight-link h5 { font-size: 18px; line-height: 1.3; margin-bottom: 18px; letter-spacing: -0.3px; font-weight: 400; }
.insight-link .read-arrow { color: var(--accent); font-size: 13px; letter-spacing: 0.3px; }

/* ========== TEAM ========== */
.team-content {
  display: grid; grid-template-columns: 1fr 2fr; gap: 80px;
  align-items: start; margin-top: 56px;
}
@media (max-width: 768px) { .team-content { grid-template-columns: 1fr; gap: 56px; } }
.founder-card {
  padding: 48px 40px; background: var(--bg-soft);
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
}
.founder-card .avatar {
  width: 80px; height: 80px; border-radius: 50%;
  background: var(--accent); color: var(--text);
  display: flex; align-items: center; justify-content: center;
  font-size: 36px; margin-bottom: 28px; font-weight: 400;
}
.founder-card h4 { font-size: 26px; margin-bottom: 8px; letter-spacing: -0.5px; color: var(--text); font-weight: 400; }
.founder-card .title { font-size: 15px; color: var(--text-mute); margin-bottom: 24px; }
.founder-card p { font-size: 14px; color: var(--text-mute); line-height: 1.6; }
.team-engineering p {
  font-size: clamp(20px, 1.7vw, 26px); line-height: 1.55;
  color: var(--text); margin-bottom: 36px; font-weight: 400;
}

/* ========== TEAM GRID (full team page) ========== */
.team-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 0; border: 1px solid var(--border);
}
.member-card {
  padding: 40px 32px;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  transition: background 0.4s var(--ease);
}
.member-card:hover { background: var(--bg-soft); }
.member-card .avatar-sm {
  width: 56px; height: 56px; border-radius: 50%;
  background: var(--accent); color: var(--text);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px; font-size: 22px; font-weight: 400;
}
.member-card h4 { font-size: 20px; margin-bottom: 6px; color: var(--text); font-weight: 400; letter-spacing: -0.3px; }
.member-card .role {
  font-size: 12px; color: var(--accent); margin-bottom: 18px;
  text-transform: uppercase; letter-spacing: 2px; font-weight: 400;
}
.member-card p { font-size: 14px; color: var(--text-mute); line-height: 1.6; margin-bottom: 12px; }
.member-card .en-bio { color: var(--text-dim); font-size: 13px; padding-top: 12px; border-top: 1px solid var(--border); }

/* ========== FOOTER CTA ========== */
.footer-cta {
  padding: 160px 0 180px;
  position: relative; overflow: hidden;
  border-top: 4px solid var(--accent); border-bottom: none;
}
.footer-cta::before {
  content: ''; position: absolute;
  top: -100px; left: -100px; width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(161,0,255,0.25) 0%, transparent 65%);
  pointer-events: none;
}
.footer-cta::after {
  content: ''; position: absolute;
  bottom: -100px; right: -100px; width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(161,0,255,0.12) 0%, transparent 65%);
  pointer-events: none;
}
.footer-cta h2 {
  color: var(--text); max-width: 1100px; position: relative; z-index: 1;
  font-size: clamp(48px, 8vw, 112px); letter-spacing: -3px;
}
.footer-cta .cta-row {
  display: flex; gap: 16px; flex-wrap: wrap;
  margin-top: 56px; position: relative; z-index: 1;
}
.footer-cta .btn-primary { background: var(--accent); color: var(--text); border-color: var(--accent); }
.footer-cta .btn-primary:hover { background: var(--text); color: var(--bg); border-color: var(--text); }
.footer-cta .btn-secondary { background: transparent; color: var(--text); border-color: var(--text); }
.footer-cta .btn-secondary:hover { background: var(--text); color: var(--bg); }

/* ========== FOOTER ========== */
footer.site-footer {
  padding: 96px 0 32px; color: var(--text-mute);
  position: relative; overflow: hidden; border-top: 1px solid var(--border);
}
footer.site-footer::after {
  content: 'INSIGHT'; position: absolute;
  right: -60px; bottom: -40px; font-size: clamp(140px, 22vw, 320px);
  color: rgba(255,255,255,0.025); letter-spacing: -8px; line-height: 1;
  pointer-events: none; z-index: 0; font-weight: 400;
}
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: 56px; margin-bottom: 64px; position: relative; z-index: 1;
}
@media (max-width: 900px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
footer h6 {
  color: var(--text); font-size: 12px; margin-bottom: 20px;
  text-transform: uppercase; letter-spacing: 2px;
  border-top: 1px solid var(--border); padding-top: 16px; font-weight: 400;
}
footer ul { list-style: none; }
footer li { margin-bottom: 10px; font-size: 14px; }
footer a { color: var(--text-mute); }
footer a:hover { color: var(--text); }
.footer-bottom {
  padding-top: 32px; border-top: 1px solid var(--border);
  font-size: 13px; position: relative; z-index: 1;
}
.footer-brand { font-size: 17px; color: var(--accent); margin-bottom: 8px; }
.footer-brand-zh { letter-spacing: 6px; font-size: 15px; color: var(--text); margin-bottom: 20px; }

/* ========== EN/ZH visibility ========== */
.lang-en { display: none; }
body.lang-en .lang-zh { display: none; }
body.lang-en .lang-en { display: initial; }
body.lang-en .lang-en-block { display: block; }
body.lang-en .lang-en-flex { display: flex; }

/* ========== PREVIEW BANNER ========== */
.preview-banner {
  background: var(--bg-soft); color: var(--accent);
  padding: 10px 24px; font-size: 13px; text-align: center;
  border-bottom: 1px solid var(--border);
}

/* ========== REPORT PAGE ========== */
.report-hero {
  padding: 140px 0 120px; border-bottom: 1px solid var(--border);
  position: relative; overflow: hidden;
}
.report-hero::before {
  content: ''; position: absolute; top: -100px; right: -200px;
  width: 700px; height: 700px;
  background: radial-gradient(circle, rgba(161,0,255,0.15) 0%, transparent 60%);
  pointer-events: none;
}
.report-hero .label {
  color: var(--accent); font-size: 12px; letter-spacing: 2px;
  text-transform: uppercase; margin-bottom: 28px;
  border-top: 1px solid var(--accent); padding-top: 12px;
  display: inline-block;
}
.report-hero h1 {
  color: var(--text); font-size: clamp(48px, 7vw, 100px);
  line-height: 1.02; letter-spacing: -2.5px; font-weight: 400;
  max-width: 1100px;
}
.report-hero .subtitle {
  font-size: clamp(22px, 2.5vw, 32px); color: var(--text-mute);
  margin-top: 24px; margin-bottom: 32px; line-height: 1.3; font-weight: 400;
}
.report-hero .author-line { color: var(--text-dim); font-size: 14px; margin-top: 32px; }

.thesis-block {
  padding: 80px 0; border-bottom: 1px solid var(--border);
}
.thesis-block .num { font-size: 14px; color: var(--accent); letter-spacing: 2px; margin-bottom: 20px; font-weight: 400; }
.thesis-block h3 {
  font-size: clamp(28px, 4vw, 48px); margin-bottom: 28px;
  line-height: 1.15; max-width: 900px; color: var(--text); font-weight: 400; letter-spacing: -1px;
}
.thesis-block .body {
  font-size: 18px; line-height: 1.7; color: var(--text-mute);
  max-width: 760px; margin-bottom: 24px;
}
.thesis-block .body strong { color: var(--text); font-weight: 400; border-bottom: 1px solid var(--accent); }
.stat-quote {
  background: var(--bg-soft); padding: 28px 36px;
  border-left: 4px solid var(--accent);
  margin-top: 28px; font-size: 16px; line-height: 1.7; max-width: 800px;
  color: var(--text-mute);
}
.stat-quote strong { color: var(--text); display: inline-block; min-width: 120px; font-weight: 400; }

.matrix-table { width: 100%; border-collapse: collapse; margin-top: 32px; }
.matrix-table th, .matrix-table td {
  padding: 16px; text-align: left;
  border: 1px solid var(--border); font-size: 15px; color: var(--text);
}
.matrix-table th { background: var(--bg-soft); font-weight: 400; color: var(--accent); }

/* ========== LEAD FORM ========== */
.lead-form {
  background: var(--bg-soft); padding: 64px;
  border: 1px solid var(--border); border-left: 4px solid var(--accent);
  max-width: 760px; margin: 0 auto;
}
.lead-form h3 { margin-bottom: 16px; color: var(--text); }
.lead-form input, .lead-form select, .lead-form textarea {
  width: 100%; padding: 14px 16px;
  border: 1px solid var(--border); border-radius: 0;
  font-size: 15px; margin-bottom: 16px; font-family: inherit;
  background: var(--bg); color: var(--text);
}
.lead-form input:focus, .lead-form select:focus, .lead-form textarea:focus {
  outline: none; border-color: var(--accent);
}
.lead-form .privacy { font-size: 12px; color: var(--text-mute); margin-top: 16px; }

/* ========== STICKY CTA ========== */
.sticky-cta {
  position: fixed; bottom: 24px; right: 24px; z-index: 99;
  background: var(--bg-soft); color: var(--text);
  border: 1px solid var(--border); border-left: 4px solid var(--accent);
  padding: 20px 28px;
  display: flex; gap: 16px; align-items: center; max-width: 380px;
}
.sticky-cta p { font-size: 14px; line-height: 1.4; color: var(--text); }
.sticky-cta .btn-primary { padding: 10px 20px; font-size: 13px; }

/* ========== PAGE NAV TABS ========== */
.page-tabs {
  display: flex; gap: 0; padding: 0; border-bottom: 1px solid var(--border);
  overflow-x: auto;
}
.page-tabs a {
  padding: 16px 24px; font-size: 14px; color: var(--text-mute);
  border-right: 1px solid var(--border);
  white-space: nowrap; transition: color 0.3s var(--ease), background 0.3s var(--ease);
}
.page-tabs a:last-child { border-right: none; }
.page-tabs a:hover { color: var(--text); background: var(--bg-soft); }
.page-tabs a.active { color: var(--accent); background: var(--bg-soft); }

/* ========== INSIGHTS CENTER GRID ========== */
.insight-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 0; border: 1px solid var(--border);
}
.insight-tile {
  padding: 36px 28px;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  text-decoration: none; color: var(--text); display: block;
  transition: background 0.4s var(--ease);
}
.insight-tile:hover { background: var(--bg-soft); }
.insight-tile .meta {
  font-size: 12px; color: var(--text-dim); margin-bottom: 16px;
  text-transform: uppercase; letter-spacing: 2px;
}
.insight-tile h4 {
  font-size: 20px; line-height: 1.3; margin-bottom: 16px;
  color: var(--text); font-weight: 400; letter-spacing: -0.3px;
}
.insight-tile p { font-size: 14px; color: var(--text-mute); line-height: 1.6; margin-bottom: 16px; }
.insight-tile .read-arrow { font-size: 13px; color: var(--accent); letter-spacing: 0.5px; }

/* ========== ABOUT QUOTE ========== */
.about-quote {
  font-size: clamp(28px, 4vw, 48px); color: var(--accent);
  line-height: 1.3; max-width: 880px; margin: 0 auto;
  text-align: center; font-weight: 400;
}
.about-quote .zh {
  font-family: var(--font); letter-spacing: 4px; color: var(--text);
  display: block; margin-top: 16px; font-size: 0.85em;
}

/* ========== ESSAY PAGES ========== */
.article-hero h1 {
  font-size: clamp(44px, 6.5vw, 88px);
  line-height: 1.06;
  letter-spacing: -1.8px;
  margin-bottom: 18px;
}
.article-hero .lead {
  font-size: clamp(18px, 1.6vw, 24px);
  color: var(--text-mute);
  margin-bottom: 16px;
}
.article-meta {
  font-size: 13px;
  letter-spacing: 0.8px;
  color: var(--text-dim);
  text-transform: uppercase;
}
.article-content {
  font-size: 20px;
  line-height: 1.85;
  color: var(--text);
}
.article-content > *:first-child { margin-top: 0; }
.article-content p { margin: 0 0 26px; color: var(--text); }
.article-content h2 {
  margin: 68px 0 22px;
  font-size: clamp(34px, 4.2vw, 58px);
  line-height: 1.15;
  letter-spacing: -1px;
  color: var(--text);
}
.article-content h3 {
  margin: 52px 0 18px;
  font-size: clamp(28px, 3vw, 40px);
  line-height: 1.2;
  color: var(--text);
}
.article-content ul,
.article-content ol {
  margin: 0 0 30px 26px;
  color: var(--text);
}
.article-content li { margin-bottom: 10px; }
.article-content blockquote {
  margin: 0 0 28px;
  padding: 16px 22px;
  border-left: 4px solid var(--accent);
  background: var(--bg-soft);
  color: var(--text);
}
.article-content hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 36px 0;
}
.article-content strong {
  color: var(--text);
  font-weight: 500;
}