/* 金沙国际官网 - International ESG Intelligence Terminal
   设计语言：深色数据研究终端。不使用传统环保绿色站点风格。 */

:root {
  --bg-deep: #080c12;
  --bg-panel: #101825;
  --bg-panel-alt: #16202f;
  --bg-panel-raised: #1b2636;
  --border: #24344a;
  --border-soft: #1c2939;
  --sea-blue: #14406b;
  --sea-blue-bright: #1f6aa8;
  --teal: #2ad9c2;
  --teal-dim: #1a8f7f;
  --cyan: #4fc3f7;
  --white: #eef4fa;
  --muted: #93a7bd;
  --muted-dim: #6b8099;
  --amber: #eab648;
  --red: #ea5f6f;
  --green-data: #4fd18b;
  --radius: 10px;
  --radius-lg: 16px;
  --font-cjk: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Hiragino Sans GB", sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  --maxw: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg-deep);
  color: var(--white);
  font-family: var(--font-cjk);
  line-height: 1.75;
  font-size: 16px;
  overflow-x: hidden;
  background-image:
    radial-gradient(ellipse 900px 500px at 15% -10%, rgba(31, 106, 168, 0.16), transparent 60%),
    radial-gradient(ellipse 700px 500px at 100% 10%, rgba(42, 217, 194, 0.08), transparent 60%);
  background-repeat: no-repeat;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--teal); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 { font-weight: 700; line-height: 1.4; color: var(--white); margin: 0 0 .6em; }
p { margin: 0 0 1em; color: #cbd8e6; }
ul, ol { color: #cbd8e6; }
.container { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }
section { padding: 56px 0; border-top: 1px solid var(--border-soft); }
section:first-of-type { border-top: none; }
.eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--teal);
  text-transform: uppercase;
  background: rgba(42, 217, 194, 0.08);
  border: 1px solid rgba(42, 217, 194, 0.25);
  border-radius: 100px;
  padding: 4px 12px;
  margin-bottom: 14px;
}
.section-head { max-width: 760px; margin-bottom: 32px; }
.section-head h2 { font-size: 26px; }
.section-head p { color: var(--muted); font-size: 15px; }

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(8, 12, 18, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.nav-wrap { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--white); font-weight: 700; font-size: 17px; }
.brand img { width: 30px; height: 30px; }
.brand small { display: block; font-weight: 400; font-size: 11px; color: var(--muted-dim); }
.nav-links { display: flex; align-items: center; gap: 6px; }
.nav-links a {
  color: #c4d3e2; font-size: 14.5px; padding: 8px 12px; border-radius: 8px; white-space: nowrap;
}
.nav-links a:hover, .nav-links a.active { color: var(--white); background: var(--bg-panel-raised); text-decoration: none; }
.nav-toggle {
  display: none; width: 40px; height: 40px; border-radius: 8px; border: 1px solid var(--border);
  background: var(--bg-panel); color: var(--white); font-size: 20px; cursor: pointer;
}
.nav-toggle span { display:block; width:18px; height:2px; background:var(--white); margin:4px auto; transition:.2s; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px; padding: 11px 22px; border-radius: 8px;
  font-size: 14.5px; font-weight: 600; cursor: pointer; border: 1px solid transparent;
}
.btn-primary { background: linear-gradient(135deg, var(--teal), var(--sea-blue-bright)); color: #04141a; }
.btn-primary:hover { filter: brightness(1.08); text-decoration: none; }
.btn-outline { border-color: var(--border); color: var(--white); background: var(--bg-panel); }
.btn-outline:hover { border-color: var(--teal); text-decoration: none; }
.btn-row { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 20px; }

/* ---------- Hero ---------- */
.page-head { padding-top: 40px; border-top: none; }
.page-head h1 { font-size: 29px; max-width: 760px; }
.page-head p.lead { color: var(--muted); max-width: 660px; font-size: 15.5px; }
.hero { padding-top: 64px; border-top: none; }
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 40px; align-items: center; }
.hero h1 { font-size: 34px; letter-spacing: -.01em; }
.hero .lead { font-size: 16.5px; color: var(--muted); max-width: 560px; }
.hero-stats { display: flex; gap: 28px; margin-top: 28px; flex-wrap: wrap; }
.hero-stats div span { display: block; font-family: var(--font-mono); font-size: 13px; color: var(--muted-dim); }
.hero-stats div strong { font-size: 15px; color: var(--teal); }

/* ---------- Cards / Grids ---------- */
.grid { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.card {
  background: var(--bg-panel); border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 22px;
}
.card h3 { font-size: 16px; }
.card p { font-size: 14px; color: var(--muted); margin-bottom: 0; }
.card .tag {
  display: inline-block; font-family: var(--font-mono); font-size: 11px; color: var(--amber);
  border: 1px solid rgba(234, 182, 72, .3); background: rgba(234, 182, 72, .08);
  padding: 2px 9px; border-radius: 100px; margin-bottom: 10px;
}

/* ---------- Concept pill row ---------- */
.pill-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.pill {
  font-family: var(--font-mono); font-size: 12px; color: var(--cyan);
  border: 1px solid rgba(79, 195, 247, .25); background: rgba(79, 195, 247, .07);
  padding: 5px 11px; border-radius: 100px;
}

/* ---------- Articles ---------- */
.feature-article {
  background: var(--bg-panel); border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 30px 32px; margin-bottom: 22px;
}
.feature-article h3 { font-size: 20px; line-height: 1.5; }
.feature-article .meta {
  font-family: var(--font-mono); font-size: 11.5px; color: var(--muted-dim);
  margin-bottom: 14px; display:flex; gap:14px; flex-wrap:wrap;
}
.feature-article p { font-size: 15px; color: #cbd8e6; }
.article-figure { margin: 20px 0; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; background: var(--bg-panel-alt); }
.article-figure figcaption { font-size: 12px; color: var(--muted-dim); padding: 10px 14px; border-top: 1px solid var(--border); font-family: var(--font-mono); }

.observation-card {
  background: var(--bg-panel-alt); border: 1px solid var(--border); border-left: 3px solid var(--teal);
  border-radius: var(--radius); padding: 22px 24px; margin-bottom: 16px;
}
.observation-card h3 { font-size: 16.5px; }
.observation-card p { font-size: 14px; color: var(--muted); margin-bottom: 0; }

.full-article {
  background: var(--bg-panel); border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 30px 32px; margin-bottom: 24px;
}
.full-article h2 { font-size: 21px; line-height: 1.5; }
.full-article p { font-size: 15px; }

/* ---------- Summary rollup list ---------- */
.summary-list { display: grid; gap: 14px; }
.summary-item {
  background: var(--bg-panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px 20px;
}
.summary-item h4 { font-size: 15px; margin-bottom: 8px; }
.summary-item p { font-size: 13.5px; color: var(--muted); margin: 0; }
.summary-item a { color: inherit; }
.summary-item a:hover h4 { color: var(--teal); }
.more-link { font-size: 13px; margin-top: 6px; display: inline-block; }

/* ---------- FAQ ---------- */
.faq-list { display: grid; gap: 10px; }
.faq-item {
  background: var(--bg-panel); border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden;
}
.faq-q {
  margin: 0; padding: 16px 46px 16px 20px; cursor: pointer; font-size: 15px; position: relative;
  font-weight: 600; color: var(--white);
}
.faq-q::after {
  content: "+"; position: absolute; right: 18px; top: 50%; transform: translateY(-50%);
  color: var(--teal); font-size: 20px; font-weight: 400;
}
.faq-item.open .faq-q::after { content: "\2212"; }
.faq-a { padding: 0 20px; max-height: 0; overflow: hidden; transition: max-height .25s ease, padding .25s ease; }
.faq-item.open .faq-a { padding: 0 20px 18px; max-height: 600px; }
.faq-a p { font-size: 14px; color: var(--muted); margin: 0; }

/* ---------- Score / Data visual widgets ---------- */
.score-matrix { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-top: 20px; }
.score-cell {
  background: var(--bg-panel-alt); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 14px; text-align: center;
}
.score-cell .v { font-family: var(--font-mono); font-size: 20px; color: var(--teal); }
.score-cell .l { font-size: 12px; color: var(--muted-dim); margin-top: 4px; }

.confidence-badge { font-family: var(--font-mono); font-size: 11px; padding: 2px 8px; border-radius: 100px; }
.confidence-high { color: var(--green-data); border: 1px solid rgba(79,209,139,.3); background: rgba(79,209,139,.08); }
.confidence-medium { color: var(--amber); border: 1px solid rgba(234,182,72,.3); background: rgba(234,182,72,.08); }
.confidence-low { color: var(--red); border: 1px solid rgba(234,95,111,.3); background: rgba(234,95,111,.08); }

/* ---------- App feature grid ---------- */
.feature-list { list-style: none; margin: 20px 0 0; padding: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.feature-list li {
  background: var(--bg-panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 14px 16px; font-size: 14.5px; color: var(--white); display: flex; gap: 10px; align-items: center;
}
.feature-list li::before {
  content: ""; width: 8px; height: 8px; border-radius: 2px; background: var(--teal); flex: none;
}

.notice-box {
  background: rgba(234, 182, 72, .07); border: 1px solid rgba(234, 182, 72, .28);
  border-radius: var(--radius); padding: 18px 20px; margin: 20px 0; font-size: 14px; color: #e8d9b0;
}

/* ---------- Breadcrumb ---------- */
.breadcrumb { font-size: 13px; color: var(--muted-dim); padding: 16px 0 0; }
.breadcrumb a { color: var(--muted); }
.breadcrumb span { margin: 0 6px; }

/* ---------- Declarations / Company ---------- */
.declaration { font-size: 13px; color: var(--muted-dim); background: var(--bg-panel-alt); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px 18px; margin-bottom: 12px; }

/* ---------- Footer ---------- */
.site-footer { background: var(--bg-panel); border-top: 1px solid var(--border); padding: 44px 0 26px; margin-top: 40px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 30px; }
.footer-grid h4 { font-size: 13px; color: var(--muted-dim); letter-spacing: .06em; text-transform: uppercase; margin-bottom: 12px; }
.footer-grid a { display: block; color: #b9c8d8; font-size: 14px; margin-bottom: 8px; }
.footer-brand { font-weight: 700; color: var(--white); font-size: 16px; margin-bottom: 8px; }
.footer-bottom {
  border-top: 1px solid var(--border); margin-top: 30px; padding-top: 20px;
  font-size: 12.5px; color: var(--muted-dim); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px;
}
.back-to-top {
  position: fixed; right: 22px; bottom: 22px; width: 44px; height: 44px; border-radius: 50%;
  background: var(--bg-panel-raised); border: 1px solid var(--border); color: var(--teal);
  display: none; align-items: center; justify-content: center; cursor: pointer; z-index: 90; font-size: 18px;
}
.back-to-top.show { display: flex; }

/* ---------- Filter demo (carbon/data viz interactive) ---------- */
.filter-demo { background: var(--bg-panel); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 24px; }
.filter-tabs { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 18px; }
.filter-tab {
  font-family: var(--font-mono); font-size: 12.5px; padding: 7px 14px; border-radius: 100px;
  border: 1px solid var(--border); background: var(--bg-panel-alt); color: var(--muted); cursor: pointer;
}
.filter-tab.active { color: #04141a; background: var(--teal); border-color: var(--teal); }
.filter-panel { display: none; }
.filter-panel.active { display: block; }

/* ---------- Table ---------- */
.data-table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius); }
table.data-table { width: 100%; border-collapse: collapse; font-size: 13.5px; min-width: 560px; }
.data-table th, .data-table td { padding: 10px 14px; text-align: left; border-bottom: 1px solid var(--border-soft); white-space: nowrap; }
.data-table th { color: var(--muted-dim); font-family: var(--font-mono); font-size: 11.5px; text-transform: uppercase; background: var(--bg-panel-alt); }
.data-table td { color: #cbd8e6; }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 860px) {
  .nav-links { position: fixed; top: 68px; left: 0; right: 0; bottom: 0; background: var(--bg-deep);
    flex-direction: column; align-items: stretch; padding: 16px 20px; gap: 4px;
    transform: translateX(100%); transition: transform .25s ease; overflow-y: auto; }
  .nav-links.open { transform: translateX(0); }
  .nav-links a { padding: 14px 12px; border-bottom: 1px solid var(--border-soft); border-radius: 0; }
  .nav-toggle { display: block; }
  .hero-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 27px; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .score-matrix { grid-template-columns: repeat(2, 1fr); }
  .feature-list { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  section { padding: 40px 0; }
  .feature-article, .full-article { padding: 22px 20px; }
}
@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 18px; }
  .container { padding: 0 16px; }
}