/* ====== Base / Tokens ====== */
:root {
  --bg: #0b0f14;
  --card: #121821;
  --muted: #94a3b8;
  --text: #e6edf5;
  --brand: #1570ef; /* primary */
  --brand-2: #22c55e; /* accent */
  --maxw: 1200px;
  --radius: 16px;
  --shadow: 0 10px 30px rgba(0,0,0,.25);
}
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--text);
  background: linear-gradient(180deg, #0b0f14 0%, #0e141b 100%);
}
img { max-width: 100%; display: block; border-radius: 12px; }
.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }

/* ====== Header / Nav ====== */
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(11,15,20,.7); backdrop-filter: blur(8px); border-bottom: 1px solid rgba(255,255,255,.06); }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 12px 0; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; color: var(--text); }
.logo { height: 40px; width: auto; border-radius: 8px; }
.brand-text { font-weight: 600; font-size: 14px; opacity: .9; }
.nav-toggle { display: none; background: none; border: 1px solid rgba(255,255,255,.2); color: var(--text); padding: 6px 10px; border-radius: 10px; }
.nav-list { list-style: none; display: flex; gap: 18px; margin: 0; padding: 0; }
.nav-list a { color: var(--text); text-decoration: none; opacity: .9; padding: 8px 10px; border-radius: 10px; }
.nav-list a:hover { background: rgba(255,255,255,.06); }

/* ====== Hero ====== */
.hero { position: relative; padding: 80px 0 72px; background: radial-gradient(1200px 500px at 20% -10%, rgba(21,112,239,.25), transparent 60%), radial-gradient(900px 500px at 90% 10%, rgba(34,197,94,.18), transparent 60%); }
.hero-inner { text-align: center; }
.hero h1 { font-size: clamp(32px, 4vw, 48px); margin: 0 0 10px; letter-spacing: .02em; }
.lead { color: var(--muted); font-size: clamp(16px, 2.2vw, 20px); margin: 0 0 22px; }
.btn { display: inline-block; text-decoration: none; color: var(--text); padding: 12px 18px; border-radius: 12px; border: 1px solid rgba(255,255,255,.18); transition: transform .15s ease, background .15s ease; }
.btn:hover { transform: translateY(-1px); background: rgba(255,255,255,.06); }
.btn.primary { background: var(--brand); border-color: transparent; color: white; }
.btn.primary:hover { filter: brightness(1.05); }
.hero-ctas { display: flex; gap: 12px; justify-content: center; }

/* ====== Stats ====== */
.stats { padding: 24px 0; border-top: 1px solid rgba(255,255,255,.06); border-bottom: 1px solid rgba(255,255,255,.06); background: rgba(255,255,255,.02); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; text-align: center; }
.stat { background: rgba(255,255,255,.03); border: 1px solid rgba(255,255,255,.06); padding: 16px; border-radius: 14px; }
.stat .num { font-weight: 700; font-size: 24px; }
.stat .label { display: block; color: var(--muted); font-size: 13px; margin-top: 6px; }

/* ====== Sections ====== */
.section { padding: 64px 0; }
.section.alt { background: rgba(255,255,255,.02); }
.section h2 { font-size: clamp(24px, 3vw, 34px); margin: 0 0 18px; }
.muted { color: var(--muted); }

.cards { display: grid; gap: 16px; }
.cards.three { grid-template-columns: repeat(3, 1fr); }
.card { background: var(--card); border: 1px solid rgba(255,255,255,.06); padding: 18px; border-radius: var(--radius); box-shadow: var(--shadow); }
.card h3 { margin-top: 0; }

.two-col { display: grid; grid-template-columns: 1.1fr .9fr; gap: 24px; align-items: center; }
.media-box img { width: 100%; height: auto; }

.feature-list { display: grid; gap: 10px; padding-left: 18px; }
.checklist { list-style: none; padding: 0; margin: 0; }
.checklist li { position: relative; padding-left: 26px; margin: 8px 0; }
.checklist li::before { content: "✓"; position: absolute; left: 0; top: 0; color: var(--brand-2); }

/* ====== Gallery ====== */
.gallery-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.gallery-item { background: var(--card); border: 1px solid rgba(255,255,255,.06); padding: 10px; border-radius: var(--radius); text-align: center; }
.gallery-item figcaption { color: var(--muted); font-size: 12px; margin-top: 8px; }

/* ====== CTA ====== */
.cta { padding: 56px 0; background: linear-gradient(90deg, rgba(21,112,239,.18), rgba(34,197,94,.18)); border-top: 1px solid rgba(255,255,255,.06); border-bottom: 1px solid rgba(255,255,255,.06); }
.cta-inner { text-align: center; }
.cta h2 { margin: 0 0 8px; }

/* ====== Footer ====== */
.site-footer { padding-top: 36px; background: rgba(255,255,255,.02); border-top: 1px solid rgba(255,255,255,.06); }
.footer-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.06); margin-top: 24px; padding: 16px 0; color: var(--muted); text-align: center; font-size: 14px; }
.site-footer a { color: var(--text); opacity: .9; }
.site-footer a:hover { opacity: 1; }

/* ====== Responsive ====== */
@media (max-width: 980px) {
  .cards.three { grid-template-columns: 1fr 1fr; }
  .two-col { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: 1fr 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 700px) {
  .nav-toggle { display: inline-block; }
  .nav-list { position: absolute; right: 20px; top: 64px; flex-direction: column; gap: 0; background: rgba(11,15,20,.97); border: 1px solid rgba(255,255,255,.08); padding: 8px; border-radius: 12px; display: none; }
  .nav-list.open { display: flex; }
  .brand-text { display: none; }
  .cards.three { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: 1fr; }
}
/* ====== Contact Page Additions ====== */
.callout-bar { padding: 48px 0 36px; background: linear-gradient(90deg, rgba(21,112,239,.18), rgba(34,197,94,.18)); border-bottom: 1px solid rgba(255,255,255,.06); }
.callout-inner { text-align: center; }
.call-phone { margin: 12px 0 0; }

.form { margin-top: 16px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { display: flex; flex-direction: column; gap: 8px; }
.field.inline { flex-direction: row; align-items: center; gap: 16px; }
.fieldset { margin: 20px 0; padding: 16px; border: 1px solid rgba(255,255,255,.08); border-radius: var(--radius); background: var(--card); }
label { font-size: 14px; opacity: .9; }
input[type="text"], input[type="email"], input[type="tel"], input[type="number"], input[type="date"], select, textarea { background: rgba(255,255,255,.04); border: 1px solid rgba(255,255,255,.12); color: var(--text); padding: 10px 12px; border-radius: 10px; }
textarea { resize: vertical; }
.checkbox, .radio { display: inline-flex; align-items: center; gap: 8px; }
.actions { display: flex; gap: 12px; align-items: center; margin-top: 8px; }
.hidden { display: none; }

/* Dropzone */
.dropzone { position: relative; border: 2px dashed rgba(255,255,255,.18); background: rgba(255,255,255,.03); padding: 18px; border-radius: var(--radius); cursor: pointer; text-align: center; }
.dropzone.drag { background: rgba(255,255,255,.06); }
.dropzone input[type="file"] { position: absolute; inset: 0; opacity: 0; cursor: pointer; }
.previews { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-top: 12px; }
.preview-item { background: rgba(255,255,255,.03); border: 1px solid rgba(255,255,255,.06); border-radius: 10px; padding: 6px; display: flex; align-items: center; justify-content: center; min-height: 90px; overflow: hidden; }
.preview-item img { width: 100%; height: 100%; object-fit: cover; border-radius: 6px; }
.file-icon { font-size: 12px; color: var(--muted); text-align: center; padding: 10px; }

@media (max-width: 900px) {
  .form-grid { grid-template-columns: 1fr; }
  .previews { grid-template-columns: 1fr 1fr; }
}
/* 仅在下拉面板中把选项显示为黑字白底，保持关闭时外观不变 */
#type option,
#type optgroup {
  color: #000;
  background: #fff;
}
/* ====== Capabilities Additions ====== */
.notice { margin: 18px 0 0; padding: 14px 16px; border-left: 4px solid var(--brand-2); background: rgba(34,197,94,.10); border-radius: 12px; }
.notice abbr { text-decoration: none; border-bottom: 1px dotted rgba(255,255,255,.3); cursor: help; }
.bullet { margin: 10px 0 0; padding-left: 18px; }
.bullet li { margin: 6px 0; }


/* Sub‑hero variant reusing index look */
.hero--sub { padding: 64px 0 56px; }
.chip-row { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin-top: 10px; }
.chip { display: inline-block; padding: 6px 10px; border-radius: 999px; background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.10); font-size: 12px; }


/* Icon cards */
.icon-card { text-align: left; }
.icon-circle { width: 44px; height: 44px; border-radius: 50%; background: rgba(255,255,255,.06); display: grid; place-items: center; margin-bottom: 8px; font-size: 20px; }


/* Comparison matrix */
.table-wrap { overflow-x: auto; border: 1px solid rgba(255,255,255,.06); border-radius: 12px; }
.matrix { width: 100%; border-collapse: collapse; }
.matrix th, .matrix td { padding: 12px; border-bottom: 1px solid rgba(255,255,255,.06); text-align: left; }
.matrix thead th { background: rgba(255,255,255,.04); font-weight: 600; }
.matrix tbody tr:nth-child(even) td { background: rgba(255,255,255,.02); }


/* Steps */
.steps { list-style: none; counter-reset: step; padding: 0; margin: 0; display: grid; gap: 10px; }
.steps li { background: var(--card); border: 1px solid rgba(255,255,255,.06); border-radius: var(--radius); padding: 12px 14px; display: flex; align-items: center; gap: 12px; }
.steps li span { display: inline-grid; place-items: center; width: 28px; height: 28px; border-radius: 50%; background: var(--brand); color: #fff; font-weight: 700; }


@media (max-width: 980px) {
.matrix th, .matrix td { white-space: nowrap; }
}