/*
Theme Name:  元帆科技
Theme URI:   https://www.yuanfanx.com
Author:      元帆科技（东莞）有限公司
Description: 元帆科技 官网主题 — 面向真实任务的轻量桌面工具产品体系，现代科技风格
Version:     1.0.0
Text Domain: hengfan
*/

/* ============================================================
   CSS 自定义属性 (Design Tokens)
   ============================================================ */
:root {
  --color-primary-50: #eef5ff;
  --color-primary-100: #d9e9ff;
  --color-primary-200: #b9d7ff;
  --color-primary-300: #8bbdff;
  --color-primary-400: #5599ff;
  --color-primary-500: #0066ff;
  --color-primary-600: #0052cc;
  --color-primary-700: #003f99;
  --color-primary-800: #002b66;
  --color-primary-900: #001733;
  --color-secondary-50: #f8fafc;
  --color-secondary-100: #f1f5f9;
  --color-secondary-200: #e2e8f0;
  --color-secondary-300: #cbd5e1;
  --color-secondary-400: #94a3b8;
  --color-secondary-500: #64748b;
  --color-secondary-600: #475569;
  --color-secondary-700: #334155;
  --color-secondary-800: #1e293b;
  --color-secondary-900: #0f172a;
  --color-neutral-50: #f8fafc;
  --color-neutral-100: #f1f5f9;
  --color-neutral-200: #e5e7eb;
  --color-neutral-300: #d1d5db;
  --color-neutral-400: #9ca3af;
  --color-neutral-500: #64748b;
  --color-neutral-600: #475569;
  --color-neutral-700: #374151;
  --color-neutral-800: #1f2937;
  --color-neutral-900: #111827;
  --color-primary-rgb: 0, 102, 255;
  --color-secondary-rgb: 100, 116, 139;
  --color-accent-rgb: 0, 102, 255;
  --color-bg:        #f8fafc;
  --color-surface:   #ffffff;
  --color-surface2:  #f6f8fb;
  --color-surface-elevated: rgba(255,255,255,0.88);
  --color-primary:   var(--color-primary-500);
  --color-primary-hover: var(--color-primary-600);
  --color-primary-light: var(--color-primary-100);
  --color-primary-subtle: var(--color-primary-50);
  --color-secondary: var(--color-secondary-500);
  --color-secondary-hover: var(--color-secondary-600);
  --color-accent:    var(--color-primary-500);
  --color-brand-ink: var(--color-neutral-900);
  --color-hot:       var(--color-neutral-900);
  --color-gold:      #d89918;
  --color-background: var(--color-bg);
  --color-text-primary: var(--color-neutral-900);
  --color-text-secondary: var(--color-neutral-500);
  --color-text:      var(--color-text-primary);
  --color-muted:     var(--color-text-secondary);
  --color-border:    rgba(17, 24, 39, 0.1);
  --color-border2:   rgba(17, 24, 39, 0.16);
  --font-sans: "Avenir Next", "DIN Alternate", "PingFang SC", "Hiragino Sans GB",
               "Microsoft YaHei", "Segoe UI", Helvetica, sans-serif;
  --radius-sm:  6px;
  --radius-md:  12px;
  --radius-lg:  20px;
  --shadow-xs: 0 1px 2px rgba(17, 24, 39, 0.06);
  --shadow-sm: 0 8px 24px rgba(17, 24, 39, 0.08);
  --shadow-md: 0 18px 50px rgba(17, 24, 39, 0.1);
  --shadow-lg: 0 30px 90px rgba(17, 24, 39, 0.12);
  --shadow-glow-primary: 0 16px 36px rgba(var(--color-primary-rgb), 0.2);
  --shadow-glow-secondary: 0 18px 42px rgba(17, 24, 39, 0.08);
  --shadow-surface: var(--shadow-md);
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --type-hero: clamp(2.95rem, 4.2vw, 4.6rem);
  --type-h2: clamp(2.25rem, 4vw, 4.5rem);
  --type-lead: clamp(1.08rem, 1.6vw, 1.28rem);
  --type-body: 1rem;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1200px;
}

/* ============================================================
   Reset & Base
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-sans);
  background:
    radial-gradient(circle at 15% 0%, rgba(var(--color-primary-rgb),0.14), transparent 28rem),
    radial-gradient(circle at 92% 0%, rgba(var(--color-secondary-rgb),0.1), transparent 24rem),
    var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  overflow-x: hidden;
}

body.yfx-leaving {
  pointer-events: none;
}

a { color: var(--color-primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-primary-hover); }

img, svg { max-width: 100%; height: auto; }

h1, h2, h3, h4, h5, h6 {
  line-height: 1.3;
  font-weight: 700;
  color: var(--color-text);
}

p { margin-bottom: 1em; }

ul, ol { padding-left: 1.5em; }

/* ============================================================
   Container
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 2rem;
  border-radius: 999px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 14px 42px rgba(var(--color-primary-rgb),0.24), 0 0 0 1px rgba(255,255,255,0.22) inset;
}
.btn-primary:hover {
  transform: translateY(-2px);
  background: var(--color-primary-hover);
  box-shadow: 0 18px 56px rgba(var(--color-primary-rgb),0.28), 0 0 0 1px rgba(255,255,255,0.3) inset;
  color: #fff;
}

.btn-outline {
  background: rgba(255,255,255,0.045);
  color: var(--color-text);
  border: 1px solid rgba(255,255,255,0.2);
}
.btn-outline:hover {
  background: rgba(255,255,255,0.1);
  transform: translateY(-2px);
  color: #fff;
}

/* ============================================================
   Header / Navigation
   ============================================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1rem 0;
  transition: all var(--transition);
}

.site-header.scrolled {
  background: rgba(10, 14, 26, 0.9);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
  padding: 0.6rem 0;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--color-text);
}
.site-logo:hover { color: var(--color-primary); }
.site-logo:hover .logo-company-name {
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.logo-svg {
  flex-shrink: 0;
  transition: transform var(--transition);
}
.site-logo:hover .logo-svg { transform: translateY(-1px); }

/* Shrink logo slightly when header scrolls */
.site-header.scrolled .logo-svg {
  width: 46px;
  height: 46px;
}

.logo-company-name {
  max-width: 13rem;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.18;
  white-space: normal;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary-300));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  transition: background var(--transition);
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: #fff;
  flex-shrink: 0;
}

.main-nav { display: flex; align-items: center; gap: 0.25rem; }

.main-nav a {
  color: var(--color-muted);
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  transition: all var(--transition);
}
.main-nav a:hover,
.main-nav a.active { color: #fff; background: rgba(255,255,255,0.08); }

.lang-switch {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  margin-left: 0.8rem;
  padding: 0.35rem 0.55rem;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  font-size: 0.82rem;
  font-weight: 800;
  color: var(--color-text);
  text-decoration: none;
}

.lang-switch:hover {
  color: var(--color-primary);
  background: #fff;
}

/* Dropdown */
.nav-dropdown { position: relative; }
.nav-dropdown > a::after { content: " ▾"; font-size: 0.75em; }
.dropdown-menu {
  /* hidden by default; JS adds .dropdown-open to .nav-dropdown to show */
  opacity: 0;
  pointer-events: none;
  visibility: hidden;
  position: absolute;
  top: 100%;           /* flush to trigger element; padding-top creates the gap */
  left: 50%;
  transform: translateX(-50%);
  padding-top: 10px;   /* invisible bridge so cursor doesn't lose hover */
  transition: opacity 0.18s ease, visibility 0.18s ease;
  z-index: 200;
}
.dropdown-menu-inner {
  background: var(--color-surface2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.5rem;
  min-width: 280px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
}
.dropdown-menu a {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 1rem;
  color: var(--color-muted);
  border-radius: var(--radius-sm);
  white-space: nowrap;
}
.nav-dropdown.dropdown-open .dropdown-menu {
  opacity: 1;
  pointer-events: auto;
  visibility: visible;
}
.dropdown-menu a {
  display: block;
  padding: 0.5rem 1rem;
  color: var(--color-muted);
  border-radius: var(--radius-sm);
}
.dropdown-menu a:hover { color: var(--color-primary); background: rgba(var(--color-primary-rgb), 0.08); }

.nav-cta {
  padding: 0.5rem 1.25rem;
  background: linear-gradient(135deg, var(--color-accent), var(--color-primary));
  color: var(--color-brand-ink) !important;
  border-radius: 999px;
  font-weight: 700;
}
.nav-cta:hover { transform: translateY(-1px); box-shadow: 0 0 30px rgba(var(--color-primary-rgb),0.28); color: var(--color-brand-ink) !important; background: linear-gradient(135deg, var(--color-primary), var(--color-accent)) !important; }

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 0.5rem;
  background: none;
  border: none;
  z-index: 1100;
}
.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition);
}
.menu-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.menu-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.menu-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ============================================================
   Page Hero (non-front pages)
   ============================================================ */
/* ── Breadcrumb ─────────────────────────────────────────────────────────── */
.breadcrumb { margin-bottom: 1.25rem; }
.breadcrumb ol {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.85rem;
  color: var(--color-muted);
}
.breadcrumb ol li { display: flex; align-items: center; gap: 0.35rem; }
.breadcrumb ol li + li::before { content: '/'; opacity: 0.4; }
.breadcrumb ol li a { color: var(--color-muted); }
.breadcrumb ol li a:hover { color: var(--color-primary); }

.page-hero {
  padding: 9rem 0 4rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 0%, rgba(var(--color-primary-rgb), 0.08) 0%, transparent 70%);
  pointer-events: none;
}
.page-hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  background: linear-gradient(135deg, #fff 30%, var(--color-primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1rem;
}
.page-hero .lead {
  font-size: 1.2rem;
  color: var(--color-muted);
  max-width: 600px;
  margin: 0 auto;
}

/* ============================================================
   Section Utilities
   ============================================================ */
.section { padding: 5rem 0; }
.section-alt { background: var(--color-surface); }

.section-header { text-align: center; margin-bottom: 3.5rem; }
.section-header h2 {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  background: linear-gradient(135deg, #fff 40%, var(--color-primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.75rem;
}
.section-header p { color: var(--color-muted); font-size: 1.1rem; }
.section-label {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-primary);
  background: rgba(var(--color-primary-rgb), 0.1);
  padding: 0.3rem 0.85rem;
  border-radius: 99px;
  margin-bottom: 0.75rem;
  border: 1px solid rgba(var(--color-primary-rgb), 0.25);
}

/* ============================================================
   Cards
   ============================================================ */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: all var(--transition);
}
.card:hover {
  border-color: rgba(var(--color-primary-rgb), 0.35);
  transform: translateY(-4px);
  box-shadow: 0 8px 40px rgba(var(--color-primary-rgb), 0.1);
}

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(var(--color-primary-rgb), 0.15), rgba(var(--color-secondary-rgb),0.15));
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  font-size: 1.5rem;
}

.card h3 { font-size: 1.2rem; margin-bottom: 0.6rem; }
.card p { color: var(--color-muted); font-size: 0.95rem; margin-bottom: 0; }

/* ============================================================
   Grid Layouts
   ============================================================ */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.25rem; }

.yf-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2rem;
  border: 1px solid rgba(var(--color-primary-rgb), 0.24);
  border-radius: 999px;
  background: rgba(var(--color-primary-rgb), 0.06);
  color: var(--color-text);
  padding: 0.32rem 0.85rem;
  font-size: 0.86rem;
  line-height: 1.2;
}

.yf-process {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
}

.yf-step-num {
  display: inline-flex;
  margin-bottom: 1rem;
  color: var(--color-primary);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

/* ============================================================
   元帆科技 conversion redesign
   ============================================================ */
.yf-hero,
.yf-page-hero {
  position: relative;
  overflow: hidden;
  min-height: 88vh;
  display: flex;
  align-items: center;
  padding: 8.5rem 0 5rem;
  isolation: isolate;
}

.yfx-webgl-bg {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  pointer-events: none;
  opacity: 0.52;
  mix-blend-mode: screen;
}

.yfx-webgl-fallback {
  background:
    radial-gradient(circle at 25% 22%, rgba(var(--color-primary-rgb),0.34), transparent 18rem),
    radial-gradient(circle at 74% 18%, rgba(var(--color-secondary-rgb),0.22), transparent 16rem),
    radial-gradient(circle at 58% 76%, rgba(var(--color-secondary-rgb),0.24), transparent 20rem);
}

.yfx-cursor-light {
  position: fixed;
  top: 0;
  left: 0;
  width: 34rem;
  height: 34rem;
  border-radius: 50%;
  background:
    radial-gradient(circle, rgba(var(--color-primary-rgb),0.2), rgba(var(--color-secondary-rgb),0.08) 34%, transparent 68%);
  filter: blur(8px);
  mix-blend-mode: screen;
  z-index: 1;
  pointer-events: none;
  opacity: 0.85;
}

.yfx-transition {
  position: fixed;
  inset: 0;
  z-index: 99999;
  pointer-events: none;
  background: var(--color-brand-ink);
  transform: translateY(0);
  transition: transform 0.72s cubic-bezier(.77,0,.18,1), opacity 0.72s ease;
}

body.yfx-ready .yfx-transition {
  transform: translateY(-105%);
  opacity: 0;
}

body.yfx-leaving .yfx-transition {
  transform: translateY(0);
  opacity: 1;
}

.yf-page-hero { min-height: 72vh; }

.yf-hero::before,
.yf-page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(120deg, rgba(var(--color-secondary-rgb),0.08), transparent 28%),
    linear-gradient(310deg, rgba(var(--color-primary-rgb),0.1), transparent 28%),
    repeating-linear-gradient(90deg, rgba(255,255,255,0.035) 0 1px, transparent 1px 90px);
  z-index: -2;
}

.yf-hero-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.68fr);
  align-items: center;
  gap: clamp(2rem, 5vw, 5rem);
}

.yfx-section,
.site-header,
.site-footer,
.yf-final-cta {
  position: relative;
  z-index: 2;
}

.yf-hero-copy h1 {
  font-size: clamp(3.25rem, 8vw, 7.2rem);
  line-height: 0.92;
  letter-spacing: 0;
  max-width: 980px;
  margin: 1rem 0 1.25rem;
}

.yf-page-hero .yf-hero-copy h1 {
  font-size: clamp(3rem, 7vw, 6rem);
}

.yf-hero-copy p {
  max-width: 680px;
  color: var(--color-muted);
  font-size: clamp(1.04rem, 2vw, 1.32rem);
  line-height: 1.72;
}

.yf-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--color-accent);
  font-size: 0.74rem;
  font-weight: 850;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.yf-kicker::before {
  content: "";
  width: 2.25rem;
  height: 2px;
  background: linear-gradient(90deg, var(--color-hot), var(--color-accent));
}

.yf-hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 2rem;
}

.yf-proof-row {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  margin-top: 2.1rem;
}

.yf-proof-row span,
.yf-order-head strong,
.yf-price-board span,
.yf-product-card > span {
  border: 1px solid rgba(255,255,255,0.16);
  background: rgba(255,255,255,0.055);
  color: var(--color-text);
  border-radius: 999px;
  padding: 0.25rem 0.72rem;
  font-size: 0.78rem;
  font-weight: 700;
}

.yf-order-card,
.yf-price-board,
.yf-form-shell {
  border: 1px solid rgba(255,255,255,0.16);
  background:
    linear-gradient(145deg, rgba(255,255,255,0.12), rgba(255,255,255,0.035)),
    rgba(12,13,18,0.82);
  box-shadow: 0 28px 80px rgba(0,0,0,0.38);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.yfx-glass {
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(22px) saturate(1.35);
  -webkit-backdrop-filter: blur(22px) saturate(1.35);
}

.yfx-glass::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, rgba(255,255,255,0.48), rgba(var(--color-primary-rgb),0.26), rgba(var(--color-secondary-rgb),0.28), rgba(255,255,255,0.08));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

.yfx-glass::after {
  content: "";
  position: absolute;
  inset: -45% -35% auto auto;
  width: 18rem;
  height: 18rem;
  background: radial-gradient(circle, rgba(var(--color-secondary-rgb),0.18), transparent 68%);
  pointer-events: none;
}

.yf-order-card {
  border-radius: 8px;
  padding: clamp(1.25rem, 3vw, 2rem);
  transform: rotate(1.3deg);
}

.yf-order-head,
.yf-order-field,
.yf-order-total {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  border-bottom: 1px solid rgba(255,255,255,0.11);
  padding: 1rem 0;
}

.yf-order-head { padding-top: 0; }
.yf-order-head span,
.yf-order-field span,
.yf-order-total span {
  color: var(--color-muted);
  font-size: 0.86rem;
}

.yf-order-field strong,
.yf-order-total strong {
  color: #fff;
  text-align: right;
  font-size: 1rem;
}

.yf-order-total strong {
  color: var(--color-accent);
  font-size: 1.18rem;
}

.yf-order-card .btn { width: 100%; justify-content: center; margin-top: 1.35rem; }

.yf-tight-section { padding-top: 4.5rem; padding-bottom: 4.5rem; }

.yf-section-title {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 2rem;
  margin-bottom: 1.8rem;
}

.yf-section-title h2 {
  max-width: 760px;
  font-size: clamp(1.9rem, 4vw, 3.5rem);
  line-height: 1.05;
  letter-spacing: 0;
  margin: 0;
}

.yf-service-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.85rem;
}

.yf-chip-card {
  min-height: 94px;
  display: flex;
  align-items: end;
  padding: 1rem;
  border-radius: 8px;
  color: #fff;
  background:
    linear-gradient(160deg, rgba(var(--color-primary-rgb),0.18), rgba(255,255,255,0.05)),
    var(--color-surface);
  border: 1px solid rgba(255,255,255,0.14);
  font-size: 1.05rem;
  font-weight: 850;
}

.yf-chip-card,
.yf-step-card,
.yf-product-card {
  box-shadow: 0 18px 60px rgba(0,0,0,0.18);
}

.yf-chip-card:hover {
  color: var(--color-brand-ink);
  background: linear-gradient(135deg, var(--color-accent), var(--color-primary));
  transform: translateY(-3px);
}

.yf-process-modern {
  grid-template-columns: repeat(auto-fit, minmax(132px, 1fr));
}

.yf-step-card {
  min-height: 132px;
  padding: 1rem;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.14);
  background: linear-gradient(150deg, rgba(255,255,255,0.12), rgba(255,255,255,0.045));
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.yf-step-card span {
  color: var(--color-hot);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.12em;
}

.yf-step-card strong {
  color: #fff;
  font-size: 1.16rem;
}

.yf-product-card {
  min-height: 230px;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.14);
  background:
    linear-gradient(160deg, rgba(var(--color-secondary-rgb),0.18), rgba(255,255,255,0.035) 48%),
    var(--color-surface);
  padding: 1.4rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.yfx-reveal {
  will-change: transform, opacity, filter;
}

html.yfx-js .yfx-reveal:not(.yfx-in) {
  opacity: 0;
  transform: translateY(28px);
  filter: blur(8px);
}

.yfx-reveal.yfx-in {
  opacity: 1;
  transform: translateY(0);
  filter: blur(0);
  transition: opacity 0.85s ease, transform 0.85s cubic-bezier(.2,.8,.2,1), filter 0.85s ease;
}

.yf-product-card h3 {
  font-size: 1.28rem;
  margin: 2rem 0 0.45rem;
}

.yf-product-card p {
  color: var(--color-muted);
  margin: 0;
}

.yf-package-card:nth-child(2) {
  background:
    linear-gradient(160deg, rgba(var(--color-secondary-rgb),0.18), rgba(255,255,255,0.035) 48%),
    var(--color-surface);
}

.yf-package-card:nth-child(3) {
  background:
    linear-gradient(160deg, rgba(var(--color-secondary-rgb),0.14), rgba(255,255,255,0.035) 48%),
    var(--color-surface);
}

.yf-final-cta {
  padding: 5rem 0;
  background: linear-gradient(135deg, var(--color-accent), var(--color-primary) 60%, #fff);
  color: var(--color-brand-ink);
}

.yf-final-cta .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.yf-final-cta h2 {
  color: var(--color-brand-ink);
  font-size: clamp(2rem, 4vw, 4rem);
  line-height: 1.04;
  max-width: 850px;
  margin: 0;
}

.yf-final-cta .btn-primary {
  background: var(--color-brand-ink);
  color: #fff;
  box-shadow: none;
  flex-shrink: 0;
}

.yf-price-board {
  border-radius: 8px;
  padding: 1.25rem;
  display: grid;
  gap: 0.8rem;
}

.yf-price-board div {
  min-height: 116px;
  border-radius: 6px;
  padding: 1rem;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.yf-price-board strong {
  font-size: clamp(1.45rem, 3vw, 2.1rem);
  line-height: 1;
  color: #fff;
}

.yf-form-shell {
  border-radius: 8px;
  display: grid;
  grid-template-columns: minmax(260px, 0.72fr) minmax(0, 1fr);
  gap: 1.25rem;
  padding: 1.25rem;
}

.yf-form-copy {
  padding: clamp(1.25rem, 3vw, 2.25rem);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.yf-form-copy h2 {
  font-size: clamp(2.25rem, 5vw, 4.2rem);
  line-height: 0.98;
  margin: 1rem 0;
}

.yf-form-copy p,
.yf-form-copy li {
  color: var(--color-muted);
}

.yf-form-copy ul {
  list-style: none;
  padding: 0;
  margin: 2rem 0 0;
  display: grid;
  gap: 0.65rem;
}

.yf-form-copy li {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding-top: 0.65rem;
}

.yf-form-card > .card {
  border-radius: 6px;
  background: #f6f7f2;
  color: #101116;
  border-color: rgba(0,0,0,0.08);
  box-shadow: none;
}

.yf-form-card .btn-primary {
  position: relative;
  overflow: hidden;
}

.yf-form-card .btn-primary::after,
.yf-hero-actions .btn-primary::after,
.yf-order-card .btn-primary::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(110deg, transparent, rgba(255,255,255,0.64), transparent);
  transform: translateX(-120%);
  transition: transform 0.75s ease;
}

.yf-form-card .btn-primary:hover::after,
.yf-hero-actions .btn-primary:hover::after,
.yf-order-card .btn-primary:hover::after {
  transform: translateX(120%);
}

.yf-form-card h3,
.yf-form-card label {
  color: #101116 !important;
}

.yf-form-card p,
.yf-form-card .form-group label + p {
  color: #5d6470 !important;
}

.yf-form-card .form-group input,
.yf-form-card .form-group textarea,
.yf-form-card .form-group select {
  background: #fff;
  border-color: rgba(0,0,0,0.14);
  color: #101116;
}

/* ============================================================
   Premium Home Page
   ============================================================ */
.home .site-header {
  padding: 0.68rem 0;
  background: rgba(250,251,253,0.86);
  border-bottom: 1px solid rgba(15,23,42,0.08);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.home .site-logo .logo-svg {
  width: 50px;
  height: 52px;
}

.home .logo-company-name {
  color: #101828;
  font-size: 0.76rem;
  letter-spacing: 0.045em;
}

.home .main-nav a {
  color: rgba(15,23,42,0.58);
  padding: 0.46rem 0.78rem;
  font-size: 0.88rem;
}

.home .main-nav a:hover,
.home .main-nav a.active {
  color: var(--color-text-primary);
  background: rgba(15,23,42,0.06);
}

.home .main-nav .nav-cta {
  color: #fff !important;
  background: var(--color-text-primary);
  box-shadow: none;
}

.home .menu-toggle span {
  background: var(--color-text-primary);
}

.yfx-home-hero {
  min-height: 88vh;
  padding: 7.2rem 0 4.6rem;
  background:
    linear-gradient(90deg, rgba(247,248,251,0.94) 0%, rgba(247,248,251,0.74) 48%, rgba(247,248,251,0.48) 100%),
    url("images/yuanfanx-hero-bg.png"),
    var(--color-bg);
  background-position: center center;
  background-size: auto, cover, auto;
  background-repeat: no-repeat;
  color: var(--color-text-primary);
}

.yfx-home-hero .container {
  max-width: min(1500px, calc(100vw - 7rem));
}

.yfx-home-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.68), transparent 44%, rgba(247,248,251,0.62)),
    linear-gradient(90deg, rgba(15,23,42,0.035) 1px, transparent 1px),
    linear-gradient(rgba(15,23,42,0.032) 1px, transparent 1px);
  background-size: auto, 72px 72px, 72px 72px;
  z-index: -2;
}

.yfx-home-hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 22vh;
  background: linear-gradient(180deg, transparent, rgba(247,248,251,0.94));
  z-index: -1;
  pointer-events: none;
}

.yfx-home-grid {
  grid-template-columns: minmax(650px, 0.98fr) minmax(430px, 0.62fr);
  gap: clamp(4rem, 6.8vw, 8.2rem);
  transform: translateY(-1.2rem);
}

.yfx-home-copy h1 {
  max-width: 920px;
  color: var(--color-text-primary);
  font-size: clamp(3.25rem, 4.08vw, 5rem);
  line-height: 1.02;
  letter-spacing: 0;
  text-wrap: balance;
}

.yfx-home-copy p {
  max-width: 620px;
  color: rgba(15,23,42,0.62);
  font-size: clamp(1.06rem, 1.22vw, 1.24rem);
}

.yfx-home-hero .yf-kicker {
  color: var(--color-primary);
  letter-spacing: 0.12em;
}

.yfx-home-hero .yf-kicker::before {
  background: var(--color-primary);
}

.yfx-home-hero .btn-primary {
  background: var(--color-text-primary);
  color: #fff;
  box-shadow: 0 18px 42px rgba(15,23,42,0.16);
}

.yfx-home-hero .btn-primary:hover {
  background: var(--color-primary-hover);
  color: #fff;
}

.yfx-home-hero .btn-outline {
  background: #fff;
  border-color: rgba(15,23,42,0.12);
  color: var(--color-text-primary);
}

.yfx-home-hero .yf-proof-row span {
  background: rgba(255,255,255,0.72);
  border-color: rgba(15,23,42,0.1);
  color: rgba(15,23,42,0.58);
  font-weight: 650;
}

.yfx-workflow-panel {
  position: relative;
  border-radius: 14px;
  border: 1px solid rgba(15,23,42,0.12);
  background: rgba(255,255,255,0.88);
  box-shadow: 0 34px 80px rgba(15,23,42,0.12);
  padding: 1rem;
  overflow: hidden;
}

.yfx-workflow-panel::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 4px;
  background:
    linear-gradient(90deg, var(--color-text-primary), var(--color-primary), #67e8f9);
  pointer-events: none;
}

.yfx-workflow-panel > * {
  position: relative;
  z-index: 1;
}

.yfx-os-topbar,
.yfx-os-flow {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.yfx-os-topbar {
  padding: 0.82rem 0.85rem 0.95rem;
  border-bottom: 1px solid rgba(15,23,42,0.09);
}

.yfx-os-topbar span,
.yfx-workflow-list span {
  color: rgba(15,23,42,0.42);
  font-size: 0.72rem;
  font-weight: 800;
}

.yfx-os-topbar strong {
  border-radius: 999px;
  padding: 0.28rem 0.58rem;
  color: var(--color-primary-hover);
  background: var(--color-primary-subtle);
  font-size: 0.66rem;
  letter-spacing: 0.04em;
}

.yfx-workflow-intro {
  margin: 1rem 0 0.95rem;
  color: rgba(15,23,42,0.58);
  font-size: 0.9rem;
}

.yfx-workflow-list {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.68rem;
}

.yfx-workflow-list::before {
  content: "";
  position: absolute;
  top: 1.4rem;
  bottom: 1.4rem;
  left: 1.14rem;
  width: 1px;
  background: linear-gradient(180deg, rgba(var(--color-primary-rgb), 0.42), rgba(15,23,42,0.08));
}

.yfx-workflow-list li {
  position: relative;
  display: grid;
  grid-template-columns: 2.18rem minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.8rem;
  min-height: 72px;
  padding: 0.78rem;
  border-radius: 10px;
  border: 1px solid rgba(15,23,42,0.09);
  background: #fff;
}

.yfx-workflow-list li.is-active {
  border-color: rgba(var(--color-primary-rgb), 0.24);
  background: #f8fbff;
  box-shadow: inset 3px 0 0 var(--color-primary);
}

.yfx-workflow-list li > span {
  width: 2.18rem;
  height: 2.18rem;
  border-radius: 999px;
  display: grid;
  place-items: center;
  color: rgba(15,23,42,0.54);
  background: #f1f5f9;
  border: 1px solid rgba(15,23,42,0.08);
  font-size: 0.72rem;
}

.yfx-workflow-list li.is-active > span {
  color: #fff;
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.yfx-workflow-list strong {
  display: block;
  color: var(--color-text-primary);
  font-size: 0.98rem;
  line-height: 1.25;
}

.yfx-workflow-list p {
  margin: 0.2rem 0 0;
  color: rgba(15,23,42,0.52);
  font-size: 0.82rem;
  line-height: 1.45;
}

.yfx-workflow-list em {
  align-self: start;
  border-radius: 999px;
  padding: 0.18rem 0.45rem;
  color: rgba(15,23,42,0.42);
  background: #f1f5f9;
  font-size: 0.6rem;
  font-style: normal;
  font-weight: 900;
}

.yfx-workflow-list li.is-active em {
  color: var(--color-primary-hover);
  background: var(--color-primary-subtle);
}

.home #hf-chat-btn,
.home #hf-chat-win,
.home #hf-wechat-modal {
  display: none !important;
  opacity: 0 !important;
  pointer-events: none !important;
}

#codex-browser-sidebar-comments-root {
  display: none !important;
  opacity: 0 !important;
  pointer-events: none !important;
}

/* ============================================================
   AI Project Consultant Desk
   ============================================================ */
.yfx-consult-hero {
  min-height: 100vh;
  padding: 8rem 0 4rem;
  align-items: center;
}

.yfx-consult-layout {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(300px, 0.56fr) minmax(0, 1.44fr);
  gap: clamp(1.4rem, 4vw, 3.6rem);
  align-items: center;
}

.yfx-consult-copy h1 {
  font-size: clamp(2.75rem, 5.4vw, 5.25rem);
  line-height: 1.02;
  letter-spacing: 0;
  margin: 1rem 0 1.2rem;
  max-width: 760px;
}

.yfx-consult-copy p {
  color: rgba(245,247,251,0.74);
  font-size: clamp(1.04rem, 1.7vw, 1.25rem);
  line-height: 1.72;
  max-width: 610px;
}

.yfx-consult-proof {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.8rem;
}

.yfx-consult-proof span {
  border: 1px solid rgba(255,255,255,0.16);
  background: rgba(255,255,255,0.055);
  color: rgba(245,247,251,0.88);
  border-radius: 999px;
  padding: 0.36rem 0.82rem;
  font-size: 0.82rem;
  font-weight: 750;
}

.yfx-desk {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(270px, 0.72fr);
  gap: 1px;
  border-radius: 8px;
  min-height: 620px;
  background:
    linear-gradient(135deg, rgba(255,255,255,0.16), rgba(var(--color-primary-rgb),0.1), rgba(var(--color-secondary-rgb),0.12)),
    rgba(5,7,12,0.72);
  border: 1px solid rgba(255,255,255,0.16);
  box-shadow: 0 34px 110px rgba(0,0,0,0.5), 0 0 64px rgba(var(--color-primary-rgb),0.12);
}

.yfx-chat-panel,
.yfx-brief-panel {
  min-width: 0;
  background: rgba(8,10,16,0.72);
}

.yfx-chat-panel {
  display: grid;
  grid-template-rows: auto 1fr auto auto;
}

.yfx-chat-topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.1rem;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  color: rgba(245,247,251,0.66);
  font-size: 0.78rem;
}

.yfx-chat-topbar div {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  color: #fff;
}

.yfx-live-dot {
  width: 0.58rem;
  height: 0.58rem;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 18px rgba(var(--color-secondary-rgb),0.8);
}

.yfx-chat-log {
  height: 372px;
  overflow: auto;
  padding: 1.15rem;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  scrollbar-width: thin;
  scrollbar-color: rgba(var(--color-primary-rgb),0.5) rgba(255,255,255,0.08);
}

.yfx-message {
  display: grid;
  grid-template-columns: 2.1rem minmax(0, 1fr);
  gap: 0.65rem;
  align-items: start;
}

.yfx-message span {
  width: 2.1rem;
  height: 2.1rem;
  border-radius: 999px;
  display: grid;
  place-items: center;
  font-size: 0.72rem;
  font-weight: 850;
}

.yfx-message p {
  margin: 0;
  border-radius: 8px;
  padding: 0.82rem 0.95rem;
  color: rgba(245,247,251,0.92);
  line-height: 1.62;
  font-size: 0.94rem;
}

.yfx-message-ai span {
  color: #071015;
  background: linear-gradient(135deg, var(--color-accent), var(--color-primary));
}

.yfx-message-ai p {
  background: rgba(255,255,255,0.075);
  border: 1px solid rgba(255,255,255,0.11);
}

.yfx-message-user {
  grid-template-columns: minmax(0, 1fr) 2.1rem;
}

.yfx-message-user span {
  grid-column: 2;
  grid-row: 1;
  color: #fff;
  background: rgba(var(--color-secondary-rgb),0.55);
  border: 1px solid rgba(255,255,255,0.18);
}

.yfx-message-user p {
  grid-column: 1;
  grid-row: 1;
  background: linear-gradient(135deg, rgba(var(--color-primary-rgb),0.24), rgba(var(--color-secondary-rgb),0.2));
  border: 1px solid rgba(var(--color-primary-rgb),0.28);
}

.yfx-quick-prompts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.48rem;
  padding: 0 1.1rem 1rem;
  overflow: hidden;
}

.yfx-quick-prompts button {
  flex: 0 0 auto;
  border: 1px solid rgba(255,255,255,0.14);
  background: rgba(255,255,255,0.06);
  color: rgba(245,247,251,0.86);
  border-radius: 999px;
  padding: 0.42rem 0.72rem;
  font-size: 0.78rem;
  font-weight: 750;
  cursor: pointer;
}

.yfx-quick-prompts button:hover {
  color: #071015;
  background: linear-gradient(135deg, var(--color-accent), var(--color-primary));
}

.yfx-chat-input {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.75rem;
  padding: 1rem;
  background: rgba(0,0,0,0.28);
  border-top: 1px solid rgba(255,255,255,0.1);
}

.yfx-chat-input textarea,
.yfx-confirm-form input {
  width: 100%;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.14);
  background: rgba(255,255,255,0.08);
  color: #fff;
  outline: none;
}

.yfx-chat-input textarea {
  height: 88px;
  min-height: 88px;
  resize: none;
  overflow: auto;
  padding: 0.82rem 0.95rem;
  line-height: 1.55;
  scrollbar-width: thin;
  scrollbar-color: rgba(var(--color-primary-rgb),0.48) rgba(255,255,255,0.08);
}

.yfx-chat-input textarea:focus,
.yfx-confirm-form input:focus {
  border-color: rgba(var(--color-primary-rgb),0.7);
  box-shadow: 0 0 0 3px rgba(var(--color-primary-rgb),0.14);
}

.yfx-chat-input .btn {
  align-self: stretch;
  min-width: 128px;
  justify-content: center;
  white-space: nowrap;
}

.yfx-chat-input .btn:disabled,
.yfx-confirm-form .btn:disabled {
  cursor: not-allowed;
  opacity: 0.52;
  transform: none;
}

.yfx-brief-panel {
  padding: 1.15rem;
  border-left: 1px solid rgba(255,255,255,0.1);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.yfx-brief-head span {
  color: var(--color-accent);
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.yfx-brief-head h2 {
  margin: 0.35rem 0 0;
  font-size: clamp(1.45rem, 2vw, 2rem);
}

.yfx-brief-list {
  display: grid;
  gap: 0.6rem;
  margin: 0;
}

.yfx-brief-list div,
.yfx-brief-summary {
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.11);
  background: rgba(255,255,255,0.055);
  padding: 0.85rem;
}

.yfx-brief-list dt {
  color: rgba(245,247,251,0.55);
  font-size: 0.72rem;
  margin-bottom: 0.3rem;
}

.yfx-brief-list dd {
  margin: 0;
  color: #fff;
  font-weight: 800;
  line-height: 1.35;
}

.yfx-brief-summary {
  min-height: 108px;
  color: rgba(245,247,251,0.72);
  font-size: 0.9rem;
  line-height: 1.68;
}

.yfx-confirm-form {
  display: grid;
  gap: 0.82rem;
  margin-top: auto;
}

.yfx-mini-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.72rem;
}

.yfx-confirm-form label {
  display: grid;
  gap: 0.32rem;
}

.yfx-confirm-form label span {
  color: rgba(245,247,251,0.58);
  font-size: 0.72rem;
  font-weight: 750;
}

.yfx-confirm-form input {
  height: 42px;
  padding: 0 0.75rem;
}

.yfx-confirm-form .btn {
  width: 100%;
  justify-content: center;
  min-height: 46px;
}

.yfx-confirm-form p {
  margin: 0;
  min-height: 1.4em;
  color: rgba(245,247,251,0.56);
  font-size: 0.8rem;
}

.yfx-confirm-form p[data-tone="ready"] { color: var(--color-accent); }
.yfx-confirm-form p[data-tone="error"] { color: #ff8c75; }
.yfx-confirm-form p[data-tone="loading"] { color: var(--color-primary); }

.yfx-confirm-form.is-submitted input,
.yfx-confirm-form.is-submitted button {
  opacity: 0.6;
  pointer-events: none;
}

.yfx-minimal-section {
  padding-top: 3.5rem;
}

.yfx-scope-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.85rem;
}

.yfx-scope-card {
  border-radius: 8px;
  min-height: 148px;
  padding: 1rem;
  background:
    linear-gradient(150deg, rgba(255,255,255,0.1), rgba(255,255,255,0.035)),
    rgba(9,11,17,0.76);
  border: 1px solid rgba(255,255,255,0.13);
}

.yfx-scope-card h3 {
  margin-bottom: 0.65rem;
  font-size: 1.1rem;
}

.yfx-scope-card p {
  margin: 0;
  color: rgba(245,247,251,0.64);
  font-size: 0.92rem;
}

.yfx-fallback-form {
  padding-top: 3.5rem;
}

/* ============================================================
   Start Project MVP
   ============================================================ */
.yfx-start-page {
  min-height: 100vh;
  padding: 8rem 0 5rem;
  background:
    radial-gradient(circle at 20% 12%, rgba(var(--color-primary-rgb),0.13), transparent 28rem),
    radial-gradient(circle at 78% 20%, rgba(var(--color-secondary-rgb),0.16), transparent 24rem),
    linear-gradient(180deg, var(--color-brand-ink), #0b0d13 42%, var(--color-brand-ink));
}

.yfx-start-grid {
  display: grid;
  grid-template-columns: minmax(260px, 0.42fr) minmax(0, 1fr);
  gap: clamp(1.4rem, 4vw, 3rem);
  align-items: start;
}

.yfx-start-rail {
  position: sticky;
  top: 7rem;
  min-width: 0;
}

.yfx-start-rail h1 {
  margin: 1rem 0 1rem;
  font-size: clamp(2.5rem, 5vw, 4.7rem);
  line-height: 1;
  max-width: 560px;
}

.yfx-start-rail p {
  color: rgba(245,247,251,0.68);
  font-size: 1.02rem;
  line-height: 1.75;
  max-width: 480px;
}

.yfx-start-steps {
  list-style: none;
  padding: 0;
  margin: 2rem 0 0;
  display: grid;
  gap: 0.55rem;
}

.yfx-start-steps li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: rgba(245,247,251,0.52);
  font-weight: 800;
}

.yfx-start-steps li::before {
  content: attr(data-step-dot);
  width: 1.8rem;
  height: 1.8rem;
  border-radius: 999px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255,255,255,0.16);
  background: rgba(255,255,255,0.055);
  font-size: 0.76rem;
}

.yfx-start-steps li.is-active {
  color: #fff;
}

.yfx-start-steps li.is-active::before {
  color: #071015;
  background: linear-gradient(135deg, var(--color-accent), var(--color-primary));
  border-color: transparent;
}

.yfx-start-console {
  width: 100%;
  min-width: 0;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.14);
  background: rgba(9,11,17,0.86);
  box-shadow: 0 34px 110px rgba(0,0,0,0.46);
  overflow: hidden;
}

.yfx-console-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.15rem;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  background: rgba(255,255,255,0.035);
}

.yfx-console-head div:first-child {
  display: grid;
  gap: 0.15rem;
}

.yfx-console-head span,
.yfx-section-line span,
.yfx-note {
  color: rgba(245,247,251,0.58);
  font-size: 0.8rem;
}

.yfx-console-head strong {
  color: #fff;
  font-size: 1.05rem;
}

.yfx-status-pill {
  border-radius: 999px;
  padding: 0.35rem 0.72rem;
  color: #071015;
  background: linear-gradient(135deg, var(--color-accent), var(--color-primary));
  font-size: 0.72rem;
  font-weight: 900;
}

.yfx-start-card {
  display: none;
  min-height: 660px;
  padding: clamp(1.2rem, 3vw, 2rem);
}

.yfx-start-card.is-active {
  display: block;
}

.yfx-ai-avatar {
  width: 3rem;
  height: 3rem;
  border-radius: 999px;
  display: grid;
  place-items: center;
  margin-bottom: 1rem;
  color: #071015;
  background: linear-gradient(135deg, var(--color-accent), var(--color-primary));
  font-weight: 950;
}

.yfx-start-card h2 {
  margin: 0 0 0.8rem;
  font-size: clamp(1.65rem, 2.8vw, 2.45rem);
  line-height: 1.16;
  overflow-wrap: anywhere;
}

.yfx-start-card > p {
  max-width: 720px;
  color: rgba(245,247,251,0.66);
}

.yfx-large-input {
  display: grid;
  gap: 0.55rem;
  margin: 1.5rem 0 1rem;
}

.yfx-large-input span,
.yfx-customer-form span {
  color: rgba(245,247,251,0.62);
  font-size: 0.8rem;
  font-weight: 800;
}

.yfx-large-input textarea,
.yfx-customer-form input {
  width: 100%;
  min-width: 0;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.14);
  background: rgba(255,255,255,0.07);
  color: #fff;
  outline: none;
}

.yfx-large-input textarea {
  resize: vertical;
  min-height: 180px;
  padding: 1rem;
  line-height: 1.65;
}

.yfx-customer-form input {
  height: 46px;
  padding: 0 0.85rem;
}

.yfx-large-input textarea:focus,
.yfx-customer-form input:focus {
  border-color: rgba(var(--color-primary-rgb),0.72);
  box-shadow: 0 0 0 3px rgba(var(--color-primary-rgb),0.13);
}

.yfx-section-line {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.2rem;
}

.yfx-section-line h2 {
  margin: 0;
}

.yfx-requirement-review,
.yfx-final-review {
  display: grid;
  gap: 0.85rem;
  margin-bottom: 1.1rem;
}

.yfx-requirement-review article,
.yfx-current-requirement,
.yfx-final-review article {
  border: 1px solid rgba(255,255,255,0.11);
  border-radius: 8px;
  background: rgba(255,255,255,0.055);
  padding: 1rem;
}

.yfx-current-requirement {
  margin-bottom: 1rem;
}

.yfx-requirement-review span,
.yfx-current-requirement span,
.yfx-final-review span {
  display: block;
  margin-bottom: 0.45rem;
  color: var(--color-accent);
  font-size: 0.74rem;
  font-weight: 900;
}

.yfx-requirement-review p,
.yfx-current-requirement p,
.yfx-final-review p {
  margin: 0;
  color: rgba(245,247,251,0.72);
  line-height: 1.78;
  white-space: pre-wrap;
}

.yfx-final-review {
  grid-template-columns: minmax(0, 1.35fr) minmax(220px, 0.65fr);
}

.yfx-final-review strong {
  display: block;
  color: #fff;
  font-size: 1.08rem;
  margin-bottom: 0.45rem;
}

.yfx-form-actions {
  margin: 1rem 0 0;
}

.yfx-report-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.85rem;
  margin-bottom: 1.25rem;
}

.yfx-report-grid article,
.yfx-quote-board div,
.yfx-created-order div {
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.11);
  background: rgba(255,255,255,0.055);
  padding: 1rem;
}

.yfx-report-grid article span,
.yfx-quote-board span,
.yfx-created-order span {
  display: block;
  color: var(--color-accent);
  font-size: 0.74rem;
  font-weight: 900;
  margin-bottom: 0.5rem;
}

.yfx-report-grid article p,
.yfx-report-grid article li {
  color: rgba(245,247,251,0.76);
  font-size: 0.92rem;
}

.yfx-report-grid article li strong {
  display: inline-block;
  color: inherit;
  margin-right: 0.35rem;
}

.yfx-report-grid article li em {
  margin-left: 0.35rem;
  color: var(--color-accent);
  font-style: normal;
  font-weight: 900;
}

.yfx-report-grid article li small {
  display: block;
  margin-top: 0.18rem;
  color: inherit;
  opacity: 0.75;
}

.yfx-report-grid article ul {
  padding-left: 1.1rem;
}

.yfx-start-card .yfx-report-grid article {
  background: rgba(255,255,255,0.96);
  border-color: rgba(15,23,42,0.12);
  box-shadow: 0 16px 42px rgba(15,23,42,0.06);
}

.yfx-start-card .yfx-report-grid article p,
.yfx-start-card .yfx-report-grid article li {
  color: rgba(15,23,42,0.72) !important;
  line-height: 1.75;
}

.yfx-start-card .yfx-report-grid article li::marker {
  color: rgba(var(--color-primary-rgb), 0.65);
}

.yfx-start-card .yfx-report-grid article span {
  color: var(--color-primary);
}

.yfx-question-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.yfx-question-list button {
  min-height: 88px;
  text-align: left;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(255,255,255,0.055);
  color: rgba(245,247,251,0.82);
  padding: 0.9rem;
  cursor: pointer;
}

.yfx-question-list button:hover {
  border-color: rgba(var(--color-primary-rgb),0.5);
}

.yfx-button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.yfx-quote-board,
.yfx-created-order {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.85rem;
  margin-bottom: 1rem;
}

.yfx-quote-items {
  display: grid;
  gap: 0.7rem;
  margin: 0 0 1rem;
}

.yfx-quote-items h3 {
  margin: 0.35rem 0 0.1rem;
  font-size: 1.05rem;
  color: #fff;
}

.yfx-quote-items article {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: flex-start;
  padding: 0.95rem 1rem;
  border: 1px solid rgba(255,255,255,0.11);
  border-radius: 8px;
  background: rgba(255,255,255,0.055);
}

.yfx-quote-items strong {
  display: block;
  color: #fff;
  font-size: 0.96rem;
}

.yfx-quote-items p {
  margin: 0.28rem 0 0;
  color: rgba(245,247,251,0.64);
  font-size: 0.86rem;
  line-height: 1.65;
}

.yfx-quote-items span {
  flex: 0 0 auto;
  color: var(--color-accent);
  font-size: 1rem;
  font-weight: 900;
}

.yfx-quote-board strong,
.yfx-created-order strong {
  color: #fff;
  font-size: clamp(1.2rem, 2vw, 1.65rem);
  line-height: 1.12;
}

.yfx-created-order .yfx-created-thanks {
  grid-column: 1 / -1;
  background: linear-gradient(135deg, rgba(239,246,255,0.98), rgba(255,255,255,0.96));
  border-color: rgba(var(--color-primary-rgb), 0.18);
}

.yfx-created-order .yfx-created-thanks span {
  color: var(--color-primary);
}

.yfx-created-order .yfx-created-thanks strong {
  color: var(--color-text-primary);
  font-size: clamp(1.18rem, 2vw, 1.55rem);
}

.yfx-created-order .yfx-created-thanks p {
  margin: 0.58rem 0 0;
  color: rgba(15,23,42,0.68);
  line-height: 1.75;
}

.yfx-customer-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem;
  max-width: 760px;
}

.yfx-customer-form label {
  display: grid;
  gap: 0.45rem;
}

.yfx-customer-form .is-wide {
  grid-column: 1 / -1;
}

.yfx-note[data-tone="error"] {
  color: #ff8c75;
}

/* ============================================================
   Footer
   ============================================================ */
.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 3.5rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
}

.footer-brand .site-logo { font-size: 1.1rem; margin-bottom: 1rem; }
.footer-brand p { color: var(--color-muted); font-size: 0.9rem; line-height: 1.6; }
.footer-contact {
  display: grid;
  gap: 0.55rem;
  margin-top: 0.9rem;
  color: var(--color-muted);
  font-size: 0.9rem;
  line-height: 1.6;
}
.footer-contact a,
.footer-contact span {
  display: inline-flex;
  align-items: flex-start;
  gap: 0.45rem;
  color: var(--color-muted);
}
.footer-contact svg {
  flex: 0 0 auto;
  margin-top: 0.18rem;
  color: var(--color-primary);
}
.footer-contact a:hover {
  color: var(--color-primary);
}

.footer-col h4 {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 1rem;
}
.footer-col ul { list-style: none; padding: 0; }
.footer-col ul li { margin-bottom: 0.6rem; }
.footer-col ul li a {
  color: var(--color-muted);
  font-size: 0.9rem;
  transition: color var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}
.footer-col ul li a::before {
  content: '›';
  color: var(--color-primary);
  opacity: 0.6;
  font-size: 1rem;
  line-height: 1;
  transition: opacity var(--transition), transform var(--transition);
}
.footer-col ul li a:hover {
  color: var(--color-primary);
}
.footer-col ul li a:hover::before {
  opacity: 1;
  transform: translateX(2px);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
  font-size: 0.85rem;
  color: var(--color-muted);
}
.footer-bottom a { color: var(--color-muted); }
.footer-bottom a:hover { color: var(--color-primary); }

/* ============================================================
   Highlight / Badge
   ============================================================ */
.badge {
  display: inline-block;
  padding: 0.2rem 0.7rem;
  border-radius: 99px;
  font-size: 0.75rem;
  font-weight: 600;
  background: rgba(var(--color-primary-rgb), 0.1);
  color: var(--color-primary);
  border: 1px solid rgba(var(--color-primary-rgb), 0.25);
}
.badge-purple {
  background: rgba(var(--color-secondary-rgb),0.1);
  color: var(--color-secondary-300);
  border-color: rgba(var(--color-secondary-rgb),0.25);
}

/* ============================================================
   Stats Row
   ============================================================ */
.stats-row {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
}
.stat-item { text-align: center; }
.stat-item .stat-num {
  font-size: 2.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.1;
}
.stat-item .stat-label { font-size: 0.85rem; color: var(--color-muted); margin-top: 0.3rem; }

/* ============================================================
   Content Page Prose
   ============================================================ */
.prose { max-width: 800px; margin: 0 auto; }
.prose h2 { font-size: 1.75rem; margin: 2rem 0 1rem; color: var(--color-text); }
.prose h3 { font-size: 1.3rem; margin: 1.5rem 0 0.75rem; color: var(--color-primary); }
.prose p { color: var(--color-muted); line-height: 1.8; }
.prose ul, .prose ol { color: var(--color-muted); line-height: 1.8; }
.prose li { margin-bottom: 0.4em; }
.prose blockquote {
  border-left: 3px solid var(--color-primary);
  padding-left: 1.25rem;
  color: var(--color-muted);
  font-style: italic;
  margin: 1.5rem 0;
}
.prose strong { color: var(--color-text); }
.prose a { color: var(--color-primary); }

/* ============================================================
   CTA Section
   ============================================================ */
.cta-section {
  text-align: center;
  padding: 6rem 0;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 50%, rgba(var(--color-secondary-rgb),0.12) 0%, transparent 70%);
  pointer-events: none;
}
.cta-section h2 {
  font-size: clamp(1.75rem, 4vw, 3rem);
  margin-bottom: 1rem;
  background: linear-gradient(135deg, #fff 30%, var(--color-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.cta-section p { color: var(--color-muted); font-size: 1.1rem; margin-bottom: 2rem; }
.cta-btns { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

/* ============================================================
   Blog Card
   ============================================================ */
.blog-card { display: flex; flex-direction: column; }
.blog-card .blog-meta { font-size: 0.8rem; color: var(--color-muted); margin-bottom: 0.6rem; }
.blog-card h3 { font-size: 1.1rem; margin-bottom: 0.6rem; line-height: 1.4; }
.blog-card p { color: var(--color-muted); font-size: 0.9rem; flex-grow: 1; }
.blog-card .read-more { color: var(--color-primary); font-size: 0.9rem; font-weight: 600; margin-top: 1rem; display: inline-flex; align-items: center; gap: 0.3rem; }
.blog-card .read-more::after { content: '→'; }

/* ============================================================
   Blog Archive — Two-column layout
   左侧最新全文 + 右侧文章标题导航
   ============================================================ */

/* 外层网格 */
.blog-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 260px;
  gap: 2.5rem;
  align-items: start;
}

/* ── 右侧侧边栏 ──
   核心规则：
   · .blog-sidebar 必须 align-self:stretch，让 grid item 高度 = 文章高度。
     这样 .blog-sidebar-inner（position:sticky）的 containing block 足够高，
     sticky 才有空间在整篇文章期间保持吸附。
   · 若 align-self:start，sidebar 高度 ≈ 内容自身高度（约 800px），
     sticky 的 containing block 与 sticky 元素等高，没有可滑动空间，
     sidebar 随页面滚动立即消失，看起来就像"跑到底部"。
   · position:sticky 保留在 .blog-sidebar-inner 上（非 grid item 本身），
     规避部分浏览器 sticky-in-grid 直接失效的 bug。 */
.blog-sidebar {
  align-self: stretch;  /* 撑满整行高度 = 文章高度，让 sticky 能正确工作 */
  min-width: 0;
}

.blog-sidebar-inner {
  position: sticky;
  top: 90px;           /* 与导航栏保持距离 */
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  max-height: calc(100vh - 110px);
  display: flex;
  flex-direction: column;
}

.blog-sidebar-title {
  flex-shrink: 0;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary);
  padding: 1rem 1.1rem 0.75rem;
  margin: 0;
  border-bottom: 1px solid var(--color-border);
}

.blog-post-list {
  list-style: none;
  margin: 0;
  padding: 0.5rem 0;
  flex: 1 1 0;        /* 撑满 sidebar-inner 剩余高度 */
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: rgba(var(--color-primary-rgb), 0.2) transparent;
}
.blog-post-list::-webkit-scrollbar { width: 3px; }
.blog-post-list::-webkit-scrollbar-thumb { background: rgba(var(--color-primary-rgb), 0.2); border-radius: 2px; }

.blog-post-list-item a {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  padding: 0.6rem 1.1rem;
  text-decoration: none;
  transition: background 0.18s, color 0.18s;
  border-right: 3px solid transparent;
  line-height: 1.45;
}
.blog-post-list-item a:hover {
  background: rgba(var(--color-primary-rgb), 0.06);
  border-right-color: var(--color-primary);
}
.blog-post-list-item.is-active a {
  background: rgba(var(--color-primary-rgb), 0.1);
  border-right-color: var(--color-primary);
}

.bpl-date {
  flex-shrink: 0;
  font-size: 0.7rem;
  color: var(--color-muted);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.bpl-title {
  font-size: 0.85rem;
  color: var(--color-text);
  line-height: 1.4;
  word-break: break-all;
}
.blog-post-list-item.is-active .bpl-title {
  color: var(--color-primary);
  font-weight: 600;
}

/* ── 右侧主内容 ── */
.blog-main {
  min-width: 0;   /* 防止 grid overflow */
  width: 100%;
}

.blog-main-header {
  margin-bottom: 1.75rem;
}
.blog-main-title {
  font-size: clamp(1.4rem, 2.5vw, 2rem);
  line-height: 1.35;
  margin: 0.5rem 0 0.75rem;
  color: var(--color-text);
}
.blog-main-meta {
  font-size: 0.85rem;
  color: var(--color-muted);
  margin: 0;
}

/* ── 响应式 ── */
@media (max-width: 900px) {
  .blog-layout {
    grid-template-columns: 1fr;
  }
  .blog-sidebar {
    order: 2;   /* 移动端：侧边栏排在文章后面 */
  }
  .blog-main {
    order: 1;
  }
  .blog-sidebar-inner {
    position: static;      /* 移动端取消 sticky */
    max-height: none;
    border-radius: var(--radius-md);
  }
  .blog-post-list {
    max-height: 220px;
  }
}

@media (max-width: 600px) {
  .blog-main-title { font-size: 1.3rem; }
  .blog-post-list  { max-height: 180px; }
}

/* ============================================================
   Pagination
   ============================================================ */
.pagination-wrap {
  display: flex;
  justify-content: center;
  margin-top: 3rem;
  margin-bottom: 1rem;
}
ul.page-numbers {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  padding: 0;
  margin: 0;
  justify-content: center;
  align-items: center;
}
ul.page-numbers li {
  display: flex;
  align-items: center;
}
/* 按钮基础样式：作用于 li 内的 a 和 span */
ul.page-numbers li > a,
ul.page-numbers li > span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.5rem;
  height: 2.5rem;
  padding: 0 0.75rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-muted);
  font-size: 0.9rem;
  font-weight: 500;
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
  box-sizing: border-box;
  transition: border-color var(--transition), color var(--transition), background var(--transition);
}
ul.page-numbers li > a:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: rgba(var(--color-primary-rgb), 0.08);
}
ul.page-numbers li > span.current {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #0a0e1a;
  font-weight: 700;
}
ul.page-numbers li > span.dots {
  border: none;
  background: transparent;
  cursor: default;
  min-width: auto;
  padding: 0 0.25rem;
  color: var(--color-muted);
}
ul.page-numbers li > a.prev,
ul.page-numbers li > a.next { padding: 0 1rem; }

/* ============================================================
   FAQ Accordion
   ============================================================ */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 0.75rem;
  overflow: hidden;
}
.faq-item summary {
  padding: 1.25rem 1.5rem;
  cursor: pointer;
  font-weight: 600;
  color: var(--color-text);
  display: flex;
  justify-content: space-between;
  align-items: center;
  list-style: none;
  transition: background var(--transition);
}
.faq-item summary:hover { background: rgba(var(--color-primary-rgb), 0.05); }
.faq-item summary::after { content: '+'; color: var(--color-primary); font-size: 1.3rem; flex-shrink: 0; }
.faq-item[open] summary::after { content: '−'; }
.faq-item[open] { border-color: rgba(var(--color-primary-rgb), 0.3); }
.faq-answer { padding: 0 1.5rem 1.25rem; color: var(--color-muted); line-height: 1.8; }

/* ============================================================
   Contact Form
   ============================================================ */
.contact-form { max-width: 640px; margin: 0 auto; }
.form-group { margin-bottom: 1.25rem; }
.form-group label { display: block; font-size: 0.9rem; font-weight: 600; margin-bottom: 0.4rem; color: var(--color-muted); }
.yfcf-form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1rem;
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  background: var(--color-surface2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 1rem;
  transition: border-color var(--transition);
  outline: none;
}
.form-group input:focus,
.form-group textarea:focus { border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(var(--color-primary-rgb), 0.1); }
.form-group textarea { min-height: 130px; resize: vertical; }

/* ============================================================
   Privacy Tabs
   ============================================================ */
.privacy-tabs { display: flex; gap: 0.5rem; margin-bottom: 2rem; }
.privacy-tab {
  padding: 0.6rem 1.5rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-weight: 600;
  border: 1px solid var(--color-border);
  background: transparent;
  color: var(--color-muted);
  transition: all var(--transition);
}
.privacy-tab.active { background: var(--color-primary); color: #0a0e1a; border-color: var(--color-primary); }
.privacy-content { display: none; }
.privacy-content.active { display: block; }

/* ============================================================
   Legal / Privacy Pages
   ============================================================ */
.yf-legal-page {
  overflow-x: hidden;
}

.yf-legal-hero {
  background:
    radial-gradient(circle at 78% 42%, rgba(var(--color-primary-rgb), 0.09), transparent 32rem),
    linear-gradient(180deg, rgba(255,255,255,0.86), rgba(247,248,251,0.82));
}

.yf-legal-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  margin-bottom: 1.15rem;
  padding: 0.42rem 0.7rem;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: rgba(255,255,255,0.78);
  color: var(--color-neutral-600);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0;
}

.yf-legal-kicker::before {
  content: "";
  width: 0.42rem;
  height: 0.42rem;
  border-radius: 999px;
  background: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(var(--color-primary-rgb), 0.12);
}

.yf-legal-hero h1 {
  max-width: 780px;
  margin-bottom: 1.1rem;
  font-size: clamp(2.6rem, 5vw, 4.5rem);
  line-height: 1.03;
  letter-spacing: 0;
  overflow-wrap: anywhere;
}

.yf-legal-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.yf-legal-actions .btn {
  min-height: 48px;
  padding: 0.78rem 1.2rem;
  border-radius: 12px;
  font-weight: 800;
}

.yf-legal-proof {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 1.25rem;
}

.yf-legal-proof span {
  padding: 0.38rem 0.7rem;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: rgba(255,255,255,0.7);
  color: var(--color-neutral-600);
  font-size: 0.8rem;
  font-weight: 700;
}

.yf-legal-section {
  padding-block: clamp(3.8rem, 6vw, 5.4rem);
}

.yf-legal-muted {
  border-block: 1px solid var(--color-border);
  background: linear-gradient(180deg, #fff, var(--color-surface2));
}

.yf-legal-scope {
  padding-top: 0;
}

.yf-legal-contact-section {
  padding-top: 0;
}

.yf-legal-section-head {
  max-width: 800px;
  margin-bottom: 2rem;
}

.yf-legal-section-head h2 {
  font-size: clamp(2rem, 3.4vw, 3.1rem);
  line-height: 1.08;
  overflow-wrap: anywhere;
}

.yf-legal-section-head p {
  max-width: 720px;
  color: rgba(15,23,42,0.64);
  font-size: 1rem;
  line-height: 1.72;
}

.yf-legal-summary-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.yf-legal-summary-grid article,
.yf-legal-path-grid article,
.yf-legal-contact {
  min-width: 0;
  padding: clamp(1.35rem, 2.3vw, 1.75rem);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  background: var(--color-surface-elevated);
  box-shadow: var(--shadow-sm);
}

.yf-legal-summary-grid h3,
.yf-legal-path-grid h3,
.yf-legal-contact h2 {
  margin-bottom: 0.7rem;
  color: var(--color-text-primary);
  line-height: 1.12;
  overflow-wrap: anywhere;
}

.yf-legal-summary-grid p,
.yf-legal-path-grid p,
.yf-legal-contact p,
.yf-legal-checklist {
  color: rgba(15,23,42,0.64);
  line-height: 1.72;
}

.yf-legal-path-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.yf-legal-path-grid article {
  display: flex;
  flex-direction: column;
  min-height: 245px;
}

.yf-legal-path-grid span {
  width: fit-content;
  margin-bottom: 1rem;
  padding: 0.32rem 0.62rem;
  border: 1px solid rgba(var(--color-primary-rgb), 0.16);
  border-radius: 999px;
  background: rgba(var(--color-primary-rgb), 0.06);
  color: var(--color-primary);
  font-size: 0.76rem;
  font-weight: 800;
}

.yf-legal-path-grid a {
  margin-top: auto;
  padding-top: 1.1rem;
  font-weight: 800;
}

.yf-legal-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(340px, 0.55fr);
  gap: clamp(1.5rem, 3.2vw, 2.6rem);
  align-items: start;
}

.yf-legal-policy-shell {
  max-width: min(1120px, calc(100% - 3rem));
}

.yf-legal-prose {
  max-width: 980px;
  margin: 0;
  padding: clamp(1.6rem, 3vw, 2.6rem);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  background: var(--color-surface-elevated);
  box-shadow: var(--shadow-sm);
}

.yf-legal-contact {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(320px, 0.75fr);
  gap: clamp(1.25rem, 3vw, 2rem);
  align-items: start;
}

.yf-legal-checklist {
  display: grid;
  gap: 0.75rem;
  margin: 1.2rem 0;
  padding: 0;
  list-style: none;
}

.yf-legal-checklist li {
  position: relative;
  padding-left: 1.45rem;
  overflow-wrap: anywhere;
}

.yf-legal-checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68rem;
  width: 0.52rem;
  height: 0.52rem;
  border-radius: 999px;
  background: var(--color-primary);
}

.yf-legal-mini-nav {
  display: grid;
  gap: 0.6rem;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border);
}

.yf-legal-mini-nav a {
  color: var(--color-neutral-700);
  font-size: 0.92rem;
  font-weight: 800;
}

.yf-legal-mini-nav a:hover {
  color: var(--color-primary);
}

/* ============================================================
   元帆科技 Global Light System
   ============================================================ */
body {
  background:
    linear-gradient(90deg, rgba(247,248,251,0.95), rgba(247,248,251,0.88)),
    url("images/yuanfanx-hero-bg.png") top center / 100% auto no-repeat,
    var(--color-bg);
  color: var(--color-text-primary);
}

a { color: var(--color-primary); }
a:hover { color: var(--color-primary-hover); }

h1, h2, h3, h4, h5, h6,
.card h3,
.yf-section-title h2,
.section-header h2,
.prose h2,
.blog-main-title,
.bpl-title {
  color: var(--color-text-primary);
  -webkit-text-fill-color: currentColor;
  background: none;
}

p,
.lead,
.page-hero .lead,
.section-header p,
.card p,
.prose p,
.prose ul,
.prose ol,
.blog-card p,
.blog-main-meta,
.stat-item .stat-label {
  color: rgba(15,23,42,0.64);
}

.site-header {
  background: rgba(250,251,253,0.88);
  border-bottom: 1px solid rgba(15,23,42,0.08);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.site-header.scrolled {
  background: rgba(250,251,253,0.94);
  border-bottom: 1px solid rgba(15,23,42,0.08);
}

.logo-company-name {
  color: var(--color-text-primary);
  -webkit-text-fill-color: currentColor;
  background: none;
  max-width: 13rem;
  line-height: 1.18;
  white-space: normal;
}

.main-nav a {
  color: rgba(15,23,42,0.58);
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--color-text-primary);
  background: rgba(15,23,42,0.06);
}

.nav-cta,
.btn-primary {
  color: #fff !important;
  background: var(--color-primary);
  box-shadow: 0 18px 42px rgba(var(--color-primary-rgb),0.18);
}

.nav-cta:hover,
.btn-primary:hover {
  color: #fff !important;
  background: var(--color-primary-hover) !important;
  box-shadow: 0 18px 42px rgba(var(--color-primary-rgb), 0.16);
}

.btn-outline {
  color: var(--color-text-primary);
  background: #fff;
  border: 1px solid rgba(15,23,42,0.12);
}

.btn-outline:hover {
  color: var(--color-text-primary);
  background: var(--color-surface2);
}

.menu-toggle span {
  background: var(--color-text-primary);
}

.dropdown-menu-inner,
.blog-sidebar-inner,
.card,
.yf-order-card,
.yf-price-board,
.yf-form-shell,
.yf-step-card,
.yf-product-card,
.yf-chip-card,
.yfx-scope-card,
.faq-item,
.contact-form .card,
.prose,
ul.page-numbers li > a,
ul.page-numbers li > span {
  background: rgba(255,255,255,0.86);
  border-color: rgba(15,23,42,0.1);
  box-shadow: 0 22px 64px rgba(15,23,42,0.08);
}

.card:hover,
.yf-chip-card:hover,
.yf-step-card:hover,
.yf-product-card:hover {
  border-color: rgba(var(--color-primary-rgb), 0.22);
  box-shadow: 0 24px 70px rgba(var(--color-primary-rgb), 0.1);
}

.card-icon,
.badge,
.section-label,
.yf-pill,
.yf-proof-row span,
.yf-product-card > span,
.yf-price-board span {
  color: var(--color-primary);
  background: var(--color-primary-subtle);
  border-color: rgba(var(--color-primary-rgb), 0.16);
}

.page-hero,
.yf-page-hero,
.yfx-consult-hero,
.yfx-start-page {
  background:
    linear-gradient(90deg, rgba(247,248,251,0.95), rgba(247,248,251,0.76)),
    url("images/yuanfanx-hero-bg.png") top center / cover no-repeat,
    var(--color-bg);
}

.page-hero::before,
.yf-page-hero::before,
.yf-hero::before {
  background:
    linear-gradient(180deg, rgba(255,255,255,0.72), transparent 45%, rgba(247,248,251,0.62)),
    linear-gradient(90deg, rgba(15,23,42,0.035) 1px, transparent 1px),
    linear-gradient(rgba(15,23,42,0.03) 1px, transparent 1px);
  background-size: auto, 72px 72px, 72px 72px;
}

.page-hero h1 {
  color: var(--color-text-primary);
  -webkit-text-fill-color: currentColor;
  background: none;
}

.yfx-consult-hero {
  min-height: auto;
  padding: 6.2rem 0 4.8rem;
}

.yfx-consult-layout {
  align-items: start;
  grid-template-columns: minmax(0, 0.88fr) minmax(620px, 1.35fr);
  gap: clamp(2.8rem, 5vw, 5.6rem);
}

.yfx-consult-copy {
  max-width: 560px;
}

.yfx-consult-copy h1 {
  max-width: 8.2em;
  font-size: clamp(3.8rem, 5.55vw, 5.3rem);
  line-height: 1;
  letter-spacing: 0;
  text-wrap: balance;
}

.yfx-consult-copy p {
  max-width: 35rem;
  font-size: 1.1rem;
  line-height: 1.9;
}

.yfx-consult-proof {
  gap: 0.65rem;
}

.yfx-consult-proof span {
  color: var(--color-neutral-700);
  background: rgba(255,255,255,0.72);
  border-color: rgba(15,23,42,0.1);
  box-shadow: 0 14px 34px rgba(15,23,42,0.06);
}

.yfx-desk {
  min-height: 600px;
  overflow: hidden;
  border-color: rgba(15,23,42,0.1);
  background: rgba(255,255,255,0.82);
  box-shadow: 0 38px 110px rgba(15,23,42,0.12);
  backdrop-filter: blur(18px);
}

.yfx-chat-panel,
.yfx-brief-panel {
  background: rgba(255,255,255,0.6);
}

.yfx-chat-topbar {
  background: rgba(255,255,255,0.72);
}

.yfx-chat-log {
  background:
    radial-gradient(circle at top left, rgba(var(--color-primary-rgb), 0.08), transparent 34%),
    #fff;
}

.yfx-message-ai p,
.yfx-message-user p {
  background: #fff;
  color: var(--color-text-primary);
  border-color: rgba(15,23,42,0.1);
  box-shadow: 0 14px 34px rgba(15,23,42,0.06);
}

.yfx-brief-panel {
  border-left-color: rgba(15,23,42,0.1);
}

.yfx-brief-list div,
.yfx-brief-summary,
.yfx-confirm-form input,
.yfx-confirm-form textarea,
.yfx-chat-input textarea {
  background: rgba(255,255,255,0.9);
}

.section {
  background: var(--color-bg);
}

.section-alt {
  background: #fff;
}

.section-label,
.yf-kicker,
.yfx-brief-head span,
.yfx-report-grid article span,
.yfx-quote-board span,
.yfx-quote-items span,
.yfx-created-order span,
.footer-col h4,
.prose h3,
.blog-card .read-more,
.bpl-title,
.yf-step-num {
  color: var(--color-primary);
}

.yf-kicker::before {
  background: var(--color-primary);
}

.yf-chip-card {
  color: var(--color-text-primary);
  align-items: center;
}

.yf-chip-card:hover {
  color: var(--color-text-primary);
  background: var(--color-primary-subtle);
  transform: translateY(-3px);
}

.yf-step-card strong,
.yf-product-card h3,
.yf-price-board strong,
.yf-order-field strong,
.yf-order-total strong,
.yfx-quote-board strong,
.yfx-quote-items h3,
.yfx-quote-items strong,
.yfx-created-order strong {
  color: var(--color-text-primary);
}

.yf-order-head span,
.yf-order-field span,
.yf-order-total span,
.yfx-console-head span,
.yfx-section-line span,
.yfx-note,
.yfx-start-rail p,
.yfx-start-card > p,
.yfx-large-input span,
.yfx-customer-form span,
.yfx-confirm-form label span,
.yfx-consult-copy p,
.yfx-consult-proof span,
.yfx-scope-card p,
.yfx-brief-list dt,
.yfx-brief-summary,
.yfx-confirm-form p,
.form-group label {
  color: rgba(15,23,42,0.6);
}

.yf-form-copy p,
.yf-form-copy li {
  color: rgba(15,23,42,0.64);
}

.yf-form-copy li {
  border-top-color: rgba(15,23,42,0.1);
}

.yfx-desk,
.yfx-start-console,
.yfx-chat-panel,
.yfx-brief-panel,
.yfx-start-card,
.yfx-requirement-review article,
.yfx-current-requirement,
.yfx-final-review article,
.yfx-report-grid article,
.yfx-quote-board div,
.yfx-quote-items article,
.yfx-created-order div,
.yfx-question-list button,
.yfx-brief-list div,
.yfx-brief-summary {
  background: rgba(255,255,255,0.86);
  border-color: rgba(15,23,42,0.1);
  box-shadow: 0 24px 70px rgba(15,23,42,0.08);
}

.yfx-requirement-review span,
.yfx-current-requirement span,
.yfx-final-review span {
  color: var(--color-primary);
}

.yfx-requirement-review p,
.yfx-current-requirement p,
.yfx-final-review p {
  color: rgba(15,23,42,0.68);
}

.yfx-final-review strong {
  color: var(--color-text-primary);
}

.yfx-quote-items p {
  color: rgba(15,23,42,0.62);
}

.yfx-desk,
.yfx-start-console {
  border: 1px solid rgba(15,23,42,0.1);
  border-radius: 14px;
  overflow: hidden;
}

.yfx-chat-panel,
.yfx-brief-panel {
  box-shadow: none;
}

.yfx-chat-topbar,
.yfx-console-head,
.yfx-chat-input {
  background: rgba(248,250,252,0.8);
  border-color: rgba(15,23,42,0.1);
}

.yfx-chat-topbar,
.yfx-chat-topbar div,
.yfx-console-head strong,
.yfx-brief-list dd,
.yfx-start-rail h1,
.yfx-start-card h2,
.yfx-scope-card h3 {
  color: var(--color-text-primary);
}

.yfx-message p,
.yfx-message-ai p,
.yfx-message-user p {
  color: var(--color-text-primary);
  background: #fff;
  border: 1px solid rgba(15,23,42,0.1);
}

.yfx-message-ai span,
.yfx-ai-avatar,
.yfx-start-steps li.is-active::before,
.yfx-status-pill,
.yfx-live-dot {
  color: #fff;
  background: var(--color-primary);
  box-shadow: none;
}

.yfx-message-user span {
  color: #fff;
  background: var(--color-text-primary);
}

.yfx-start-steps li {
  color: rgba(15,23,42,0.5);
}

.yfx-start-steps li::before,
.yfx-workflow-list li > span {
  background: #f1f5f9;
  border-color: rgba(15,23,42,0.1);
}

.yfx-start-steps li.is-active,
.yfx-confirm-form p[data-tone="ready"] {
  color: var(--color-primary);
}

.yfx-large-input textarea,
.yfx-customer-form input,
.yfx-chat-input textarea,
.yfx-confirm-form input,
.form-group input,
.form-group textarea,
.form-group select {
  background: #fff;
  border-color: rgba(15,23,42,0.14);
  color: var(--color-text-primary);
}

.yfx-large-input textarea:focus,
.yfx-customer-form input:focus,
.yfx-chat-input textarea:focus,
.yfx-confirm-form input:focus,
.form-group input:focus,
.form-group textarea:focus {
  border-color: rgba(var(--color-primary-rgb), 0.55);
  box-shadow: 0 0 0 3px rgba(var(--color-primary-rgb), 0.1);
}

.yfx-question-list button {
  color: var(--color-text-primary);
  cursor: pointer;
}

.site-footer,
.yf-final-cta {
  background: #fff;
  border-top: 1px solid rgba(15,23,42,0.1);
  color: var(--color-text-primary);
}

.yf-final-cta h2 {
  color: var(--color-text-primary);
}

.footer-bottom {
  border-top-color: rgba(15,23,42,0.1);
}

.footer-brand p,
.footer-col ul li a,
.footer-bottom,
.footer-bottom a {
  color: rgba(15,23,42,0.62);
}

.footer-col ul li a:hover,
.footer-bottom a:hover {
  color: var(--color-primary);
}

.card.card-gradient-border,
.card-gradient-border {
  background: rgba(255,255,255,0.88) !important;
  border: 1px solid rgba(15,23,42,0.1);
  box-shadow: 0 22px 64px rgba(15,23,42,0.08);
}

.card.card-gradient-border {
  padding: 2rem !important;
  background-clip: border-box;
}

.card-gradient-border::before {
  background: linear-gradient(135deg, rgba(var(--color-primary-rgb), 0.28), rgba(var(--color-primary-rgb), 0.22));
  opacity: 0.9;
}

.card-gradient-border *,
.card * {
  -webkit-text-fill-color: currentColor;
}

.card-gradient-border h3,
.card-gradient-border h4,
.card-gradient-border strong {
  color: var(--color-text-primary);
}

.card-gradient-border p,
.card-gradient-border li {
  color: rgba(15,23,42,0.62);
}

#hf-chat-btn,
#hf-chat-win,
#hf-wechat-modal {
  display: none !important;
}

.yfx-transition,
.yfx-cursor-light,
.yfx-webgl-bg {
  display: none !important;
}

html.yfx-js .yfx-reveal:not(.yfx-in),
.yfx-reveal,
.reveal {
  opacity: 1 !important;
  transform: none !important;
  filter: none !important;
}

/* ============================================================
   AI Project Desk Refinement
   ============================================================ */
.yfx-desk {
  grid-template-columns: minmax(0, 1.12fr) minmax(320px, 0.72fr);
  min-height: 560px;
  border-radius: 18px;
  background: rgba(255,255,255,0.92);
  box-shadow: 0 34px 100px rgba(15,23,42,0.12);
}

.yfx-chat-panel {
  display: grid;
  grid-template-rows: auto minmax(280px, 1fr) auto auto;
  background: #fff;
}

.yfx-chat-topbar {
  padding: 1rem 1.25rem;
  background: linear-gradient(180deg, #fff, var(--color-surface2));
}

.yfx-chat-log {
  height: auto;
  min-height: 300px;
  max-height: 460px;
  padding: 1.35rem 1.45rem;
}

.yfx-message {
  max-width: 92%;
}

.yfx-message p {
  border-radius: 14px;
  padding: 0.95rem 1.08rem;
  box-shadow: 0 14px 34px rgba(15,23,42,0.06);
}

.yfx-quick-prompts {
  padding: 0.85rem 1.35rem 1rem;
  border-top: 1px solid rgba(15,23,42,0.08);
  background: #fbfdff;
}

.yfx-quick-prompts button {
  color: var(--color-muted);
  background: #fff;
  border-color: rgba(15,23,42,0.1);
}

.yfx-chat-input {
  grid-template-columns: minmax(0, 1fr) 8.7rem;
  gap: 0.85rem;
  padding: 1rem 1.25rem 1.15rem;
  background: #fff;
  border-top: 1px solid rgba(15,23,42,0.08);
}

.yfx-chat-input textarea {
  height: 72px;
  min-height: 72px;
  border-radius: 14px;
  padding: 0.88rem 1rem;
  background: var(--color-surface2);
}

.yfx-chat-input .btn {
  min-width: 0;
  min-height: 72px;
  border-radius: 999px;
}

.yfx-brief-panel {
  padding: 1.45rem;
  gap: 1.05rem;
  background: linear-gradient(180deg, rgba(255,255,255,0.98), rgba(248,250,252,0.94));
}

.yfx-brief-head {
  padding-bottom: 0.95rem;
  border-bottom: 1px solid rgba(15,23,42,0.08);
}

.yfx-brief-head h2 {
  font-size: clamp(1.62rem, 2.35vw, 2.25rem);
}

.yfx-brief-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.85rem;
}

.yfx-brief-list div,
.yfx-brief-summary {
  border-radius: 8px;
  padding: 1rem;
  background: #fff;
  border: 1px solid rgba(15,23,42,0.1);
  box-shadow: 0 24px 70px rgba(15,23,42,0.08);
}

.yfx-brief-list dd {
  color: var(--color-text-primary);
  font-size: clamp(1.08rem, 1.6vw, 1.34rem);
  line-height: 1.12;
}

.yfx-brief-summary {
  grid-column: 1 / -1;
  min-height: auto;
  color: var(--color-muted);
}

.yfx-confirm-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem;
  margin-top: 0;
  padding-top: 1rem;
  border-top: 1px solid rgba(15,23,42,0.08);
}

.yfx-mini-grid {
  display: contents;
  gap: 0.78rem;
}

.yfx-confirm-form label {
  gap: 0.38rem;
}

.yfx-confirm-form > label,
.yfx-confirm-form .btn,
.yfx-confirm-form p {
  grid-column: 1 / -1;
}

.yfx-confirm-form input {
  height: 44px;
  border-radius: 8px;
  background: #fff;
}

.yfx-confirm-form .btn {
  min-height: 48px;
  border-radius: 999px;
}

/* ============================================================
   Showcase Pages: Products, Cases, Blog
   ============================================================ */
.page-hero {
  padding: 7.2rem 0 3.2rem;
}

.page-hero .container {
  max-width: 1040px;
}

.page-hero .breadcrumb {
  text-align: left;
  max-width: 100%;
}

.page-hero .lead {
  max-width: 680px;
  line-height: 1.8;
}

.yf-showcase-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.35rem;
}

.yf-showcase-section {
  padding-top: 2.4rem;
}

.yf-case-section {
  padding-top: 1.2rem;
}

.yf-case-section .section-header {
  max-width: 1180px;
  margin: 0 auto 1.35rem;
  text-align: left;
}

.yf-case-section .section-header h2 {
  max-width: 780px;
  font-size: clamp(1.7rem, 2.65vw, 2.25rem);
  line-height: 1.18;
  margin-bottom: 0.55rem;
}

.yf-case-section .section-header p {
  max-width: 650px;
  margin: 0;
  font-size: 1rem;
  line-height: 1.72;
}

.yf-case-section .section-header .section-label {
  margin-bottom: 0.65rem;
}

.yf-showcase-card {
  position: relative;
  display: flex !important;
  flex-direction: column;
  min-height: 252px;
  padding: clamp(1.85rem, 2.6vw, 2.25rem) !important;
  overflow: hidden;
}

.card-gradient-border.yf-showcase-card {
  padding: clamp(1.85rem, 2.6vw, 2.25rem) !important;
  background-clip: border-box;
}

.yf-showcase-card::after {
  content: '';
  position: absolute;
  inset: auto 1.85rem 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(var(--color-primary-rgb), 0.28), transparent);
  opacity: 0.75;
}

.yf-showcase-card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.4rem;
}

.yf-showcase-dot {
  color: var(--color-primary);
  font-size: 1.1rem;
  line-height: 1;
}

.yf-showcase-card h2 {
  margin: 0 0 0.78rem;
  color: var(--color-text-primary);
  font-size: clamp(1.08rem, 1.5vw, 1.32rem);
  line-height: 1.32;
}

.yf-showcase-card p {
  color: rgba(15,23,42,0.64) !important;
  font-size: 0.96rem;
  line-height: 1.78;
  max-width: 94%;
}

.yf-showcase-card-action {
  margin-top: auto;
  padding-top: 1.45rem;
}

.yf-showcase-card-action .btn {
  width: 100%;
  justify-content: center;
  min-height: 3.05rem;
  border-radius: 999px;
}

.yf-case-card {
  min-height: 214px;
}

.yf-case-card h2 {
  min-height: 2.8em;
}

.yf-showcase-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.46rem;
  margin-top: auto;
  padding-top: 1.25rem;
}

.yf-showcase-tags .yf-pill {
  min-height: 1.7rem;
  padding: 0.22rem 0.58rem;
  font-size: 0.74rem;
  background: var(--color-surface2);
}

.yf-blog-section {
  padding-top: 1.4rem;
}

.yf-blog-container {
  max-width: 1180px;
}

.yf-blog-layout {
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 1.6rem;
  align-items: start;
}

.blog-main {
  padding: clamp(1.25rem, 2.8vw, 2rem);
  background: rgba(255,255,255,0.88);
  border: 1px solid rgba(15,23,42,0.1);
  border-radius: 18px;
  box-shadow: 0 26px 76px rgba(15,23,42,0.08);
}

.yf-blog-main-header {
  padding-bottom: 1.25rem;
  border-bottom: 1px solid rgba(15,23,42,0.08);
}

.blog-main-title {
  max-width: 820px;
  font-size: clamp(1.75rem, 3vw, 2.55rem);
  letter-spacing: 0;
}

.yf-blog-prose {
  max-width: none !important;
  padding: 0;
  border: 0;
  box-shadow: none;
  background: transparent;
}

.yf-blog-prose p {
  text-indent: 2em;
  line-height: 1.92;
  margin-bottom: 1.15rem;
  text-align: justify;
}

.yf-blog-prose li p,
.yf-blog-prose figcaption p,
.yf-blog-prose .wp-block-button p {
  text-indent: 0;
}

.yf-blog-prose h2,
.yf-blog-prose h3 {
  margin-top: 2rem;
}

.blog-sidebar-inner {
  border-radius: 18px;
  background: rgba(255,255,255,0.8);
  box-shadow: 0 22px 60px rgba(15,23,42,0.07);
}

.blog-sidebar-title {
  color: var(--color-text-primary);
  letter-spacing: 0;
  text-transform: none;
  font-size: 0.95rem;
  padding: 1rem 1.05rem;
}

.blog-post-list {
  padding: 0.35rem;
}

.blog-post-list-item a {
  align-items: flex-start;
  border: 1px solid transparent;
  border-radius: 12px;
  border-right: 1px solid transparent;
  padding: 0.72rem 0.78rem;
}

.blog-post-list-item a:hover,
.blog-post-list-item.is-active a {
  background: var(--color-primary-50);
  border-color: rgba(var(--color-primary-rgb), 0.12);
  border-right-color: rgba(var(--color-primary-rgb), 0.12);
}

.bpl-date {
  color: rgba(15,23,42,0.46);
}

.bpl-title {
  color: var(--color-text-primary);
  word-break: normal;
}

.yf-blog-section {
  padding-top: 0.6rem;
}

.yf-blog-container {
  max-width: 1120px;
}

.yf-blog-layout {
  grid-template-columns: minmax(0, 760px) 280px;
  gap: 2rem;
  justify-content: center;
}

.blog-main {
  padding: clamp(2rem, 4vw, 3.2rem);
  border-radius: 22px;
  background: rgba(255,255,255,0.94);
}

.yf-blog-main-header {
  margin-bottom: 1.6rem;
}

.blog-main-title {
  max-width: 680px;
  font-size: clamp(1.85rem, 3vw, 2.45rem);
  line-height: 1.25;
}

.blog-main-meta {
  color: rgba(15,23,42,0.48);
}

.yf-blog-prose {
  color: var(--color-neutral-700);
}

.yf-blog-prose p {
  color: var(--color-neutral-600);
  font-size: 1.02rem;
  line-height: 2.05;
  margin-bottom: 1.35rem;
}

.yf-blog-prose h2 {
  margin: 2.65rem 0 1rem;
  padding-top: 0.35rem;
  color: var(--color-text-primary);
  font-size: clamp(1.55rem, 2.4vw, 2.05rem);
  line-height: 1.32;
}

.yf-blog-prose h3 {
  margin: 2rem 0 0.75rem;
  color: var(--color-primary-hover);
  font-size: clamp(1.18rem, 1.8vw, 1.45rem);
  line-height: 1.45;
}

.yf-blog-prose ul,
.yf-blog-prose ol {
  margin: 0 0 1.35rem 1.2rem;
  color: var(--color-neutral-600);
  line-height: 1.95;
}

.blog-sidebar-inner {
  background: rgba(255,255,255,0.92);
  border-color: rgba(15,23,42,0.08);
  box-shadow: 0 18px 50px rgba(15,23,42,0.06);
}

.blog-sidebar-title {
  padding: 1.05rem 1.1rem;
  border-bottom-color: rgba(15,23,42,0.08);
}

.blog-post-list {
  padding: 0.55rem;
}

.blog-post-list-item a {
  gap: 0.7rem;
  padding: 0.78rem 0.82rem;
  border-radius: 10px;
}

.blog-post-list-item a:hover {
  background: var(--color-surface2);
}

.blog-post-list-item.is-active a {
  background: var(--color-primary-subtle);
  border-color: rgba(var(--color-primary-rgb), 0.16);
}

.bpl-title {
  color: var(--color-neutral-700);
  font-size: 0.86rem;
  line-height: 1.55;
}

.blog-post-list-item.is-active .bpl-title {
  color: var(--color-primary-hover);
}

.single .blog-main > div:not(.yf-blog-prose):not(.yf-blog-main-header),
.single .blog-main > nav {
  color: var(--color-neutral-600);
}

.single .blog-main > div:not(.yf-blog-prose):not(.yf-blog-main-header) p {
  text-indent: 0;
}

@media (max-width: 1024px) {
  .yf-showcase-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .yf-blog-layout {
    grid-template-columns: 1fr;
  }

  .blog-sidebar {
    order: 2;
  }

  .blog-main {
    order: 1;
  }

  .blog-sidebar-inner {
    position: static;
    max-height: none;
  }
}

@media (max-width: 768px) {
  .page-hero {
    padding: 6.4rem 0 2.6rem;
  }

  .yf-showcase-grid {
    grid-template-columns: 1fr;
  }

  .yf-showcase-card,
  .yf-case-card {
    min-height: auto;
  }

  .yf-case-card h2 {
    min-height: 0;
  }

  .yf-blog-section,
  .yf-showcase-section,
  .yf-case-section {
    padding-top: 1.4rem;
  }

  .blog-main {
    border-radius: 14px;
    padding: 1.45rem;
  }

  .blog-main-title {
    font-size: clamp(1.55rem, 8vw, 2.15rem);
  }

  .yf-blog-prose p {
    text-indent: 2em;
    text-align: justify;
    line-height: 1.86;
  }
}

/* ============================================================
   Glow Divider
   ============================================================ */
.glow-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
  margin: 0;
  opacity: 0.4;
}

/* ============================================================
   Responsive Two-Column Layout Utility
   Used by product/solution/contact/about pages.
   The !important in the media query overrides inline grid-template-columns.
   ============================================================ */
.resp-2col {
  display: grid;
  align-items: start;
}

@media (max-width: 768px) {
  .resp-2col {
    grid-template-columns: 1fr !important;
    gap: 2rem !important;
  }
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .yf-process { grid-template-columns: repeat(2, 1fr); }
  .yf-hero-grid,
  .yf-form-shell,
  .yfx-consult-layout,
  .yfx-desk,
  .yfx-start-grid,
  .yfx-home-grid { grid-template-columns: 1fr; }
  .yf-order-card { transform: none; }
  .yf-service-strip { grid-template-columns: repeat(2, 1fr); }
  .yf-process-modern { grid-template-columns: repeat(3, 1fr); }
  .yfx-brief-panel { border-left: 0; border-top: 1px solid rgba(255,255,255,0.1); }
  .yfx-scope-grid { grid-template-columns: repeat(2, 1fr); }
  .yfx-start-rail { position: static; }
  .yfx-start-steps { display: flex; overflow-x: auto; padding-bottom: 0.25rem; max-width: 100%; }
  .yfx-start-steps li { flex: 0 0 auto; }
  .yfx-report-grid,
  .yfx-question-list,
  .yfx-quote-board,
  .yfx-created-order,
  .yfx-final-review { grid-template-columns: 1fr 1fr; }
  .yfx-home-hero .container { max-width: 100%; }
  .yfx-home-grid { transform: none; }
  .yf-final-cta .container { align-items: flex-start; flex-direction: column; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: 1fr; }
  .yf-process,
  .yfcf-form-grid { grid-template-columns: 1fr; }
  .yf-hero,
  .yf-page-hero { min-height: auto; padding: 7rem 0 3.5rem; }
  .yf-hero-copy h1,
  .yf-page-hero .yf-hero-copy h1 { font-size: clamp(2.55rem, 15vw, 4.6rem); }
  .yfx-home-hero { padding: 6.6rem 0 3.4rem; }
  .yfx-home-copy h1 {
    font-size: clamp(2.55rem, 10.6vw, 3.15rem);
    line-height: 1.08;
  }
  .yfx-workflow-list li {
    grid-template-columns: 2.3rem minmax(0, 1fr);
  }
  .yfx-workflow-list em {
    grid-column: 2;
    justify-self: start;
  }
  .yfx-consult-hero { padding: 6.4rem 0 2.6rem; }
  .yfx-consult-copy h1 { font-size: clamp(2.8rem, 14.5vw, 4.35rem); }
  .yfx-desk { min-height: auto; }
  .yfx-chat-topbar { align-items: flex-start; flex-direction: column; gap: 0.32rem; }
  .yfx-chat-log { height: 330px; padding: 0.85rem; }
  .yfx-chat-input { grid-template-columns: 1fr; }
  .yfx-chat-input .btn { width: 100%; }
  .yfx-mini-grid,
  .yfx-scope-grid,
  .yfx-report-grid,
  .yfx-question-list,
  .yfx-quote-board,
  .yfx-created-order,
  .yfx-final-review,
  .yfx-customer-form { grid-template-columns: 1fr; }
  .yfx-start-page { padding: 6.5rem 0 3.2rem; }
  .yfx-start-rail h1 { font-size: clamp(2.35rem, 12vw, 3.5rem); }
  .yfx-start-card { min-height: auto; }
  .yfx-console-head { align-items: flex-start; flex-direction: column; }
  .yf-section-title { display: block; }
  .yf-section-title h2 { margin-top: 0.75rem; }
  .yf-service-strip,
  .yf-process-modern { grid-template-columns: 1fr; }
  .yf-chip-card { min-height: 72px; }
  .yf-step-card { min-height: 96px; }
  .yf-form-card > .card { padding: 1.4rem !important; }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .footer-bottom { flex-direction: column; gap: 0.75rem; text-align: center; }
  /* Header is always visible on mobile — never hide it.
     backdrop-filter must NOT be set here: it creates a CSS containing block
     that traps position:fixed children (the .main-nav.open overlay) inside
     the header's bounding box, making the menu invisible. Use solid bg instead. */
  .site-header {
    position: fixed !important;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    border-bottom: 1px solid rgba(15,23,42,0.08);
    box-shadow: 0 10px 30px rgba(15,23,42,0.08);
    z-index: 1100;
  }
  /* Same fix for scrolled state on mobile */
  .site-header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
  }

  /* ── Mobile Navigation Overlay ─────────────────────────────── */
  .main-nav { display: none; }
  .main-nav.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: #fff;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    align-items: stretch;
    justify-content: flex-start;
    padding-top: 92px; /* clear the fixed header */
    gap: 0;
    z-index: 1050;
    overflow-y: auto;
    box-shadow: inset 0 1px 0 rgba(15,23,42,0.08);
  }

  /* Top-level nav links in the open overlay */
  .main-nav.open > a,
  .main-nav.open > .nav-dropdown > a {
    font-size: 1.1rem;
    padding: 0.9rem 1.5rem;
    border-bottom: 1px solid rgba(var(--color-primary-rgb), 0.08);
    display: block;
    width: 100%;
    text-align: left;
    border-radius: 0;
    color: var(--color-text-primary);
    background: #fff;
  }
  .main-nav.open > a:hover,
  .main-nav.open > a.active,
  .main-nav.open > a.current,
  .main-nav.open > .nav-dropdown > a:hover,
  .main-nav.open > .nav-dropdown > a.active,
  .main-nav.open > .nav-dropdown.current-parent > a {
    background: rgba(var(--color-primary-rgb), 0.06);
    color: var(--color-primary);
  }

  /* CTA button inside the open overlay */
  .main-nav.open > a.nav-cta {
    margin: 1.25rem 1.5rem 0;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    text-align: center;
    font-size: 1rem;
    border-bottom: none;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    color: #0a0e1a !important;
    width: calc(100% - 3rem);
  }

  /* Hamburger button */
  .menu-toggle {
    display: flex;
    width: 42px;
    height: 42px;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(15,23,42,0.12);
    border-radius: 12px;
    background: #fff;
    box-shadow: 0 8px 20px rgba(15,23,42,0.08);
  }
  .menu-toggle span {
    background: var(--color-text-primary);
  }
  .menu-toggle[aria-expanded="true"] {
    background: rgba(var(--color-primary-rgb), 0.07);
    border-color: rgba(var(--color-primary-rgb), 0.22);
  }

  /* Dropdown in mobile overlay */
  .main-nav.open > .nav-dropdown {
    border-bottom: 1px solid rgba(var(--color-primary-rgb), 0.08);
    background: #fff;
  }
  .main-nav.open .nav-dropdown .dropdown-menu {
    display: block;
    position: static;
    transform: none;
    box-shadow: none;
    background: transparent;
    border: none;
    padding: 0;
    width: 100%;
    min-width: auto;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    max-height: none;
    overflow: visible;
    transition: none;
  }
  .main-nav.open .nav-dropdown .dropdown-menu .dropdown-menu-inner {
    background: rgba(15,23,42,0.025);
    border: none;
    border-top: 1px solid rgba(var(--color-primary-rgb), 0.06);
    box-shadow: none;
    padding: 0.25rem 0;
    min-width: auto;
    border-radius: 0;
  }
  .main-nav.open .nav-dropdown .dropdown-menu a {
    display: block;
    font-size: 0.98rem;
    justify-content: flex-start;
    text-align: left;
    padding: 0.72rem 2rem;
    border-radius: 0;
    color: var(--color-text-secondary);
  }
  .main-nav.open .nav-dropdown .dropdown-menu a:hover {
    color: var(--color-primary);
    background: rgba(var(--color-primary-rgb), 0.06);
  }

  .stats-row { justify-content: center; }

  /* ── Footer on mobile ───────────────────────────────────────── */
  .site-footer { padding: 2.5rem 0 1.5rem; }
  .footer-grid { gap: 1.5rem; }
  .footer-col h4 { margin-bottom: 0.6rem; font-size: 0.78rem; }
  .footer-col ul li { margin-bottom: 0.45rem; }
  .footer-col ul li a { font-size: 0.875rem; }
  .footer-brand p { font-size: 0.85rem; }
}

@media (max-width: 480px) {
  .container { padding: 0 1rem; }
  .section { padding: 3.5rem 0; }
  .btn { padding: 0.65rem 1.5rem; font-size: 0.95rem; }
  /* Hide long company name so hamburger button has room */
  .logo-company-name { display: none; }
}

@media (max-width: 760px) {
  .yf-legal-page,
  .yf-legal-page .container {
    max-width: 100%;
    overflow-x: hidden;
  }

  .yf-legal-hero h1 {
    font-size: clamp(2rem, 10vw, 2.55rem);
    line-height: 1.08;
  }

  .yf-legal-actions .btn {
    width: 100%;
    justify-content: center;
  }

  .yf-legal-summary-grid,
  .yf-legal-path-grid,
  .yf-legal-layout {
    grid-template-columns: 1fr;
  }

  .yf-legal-path-grid article {
    min-height: auto;
  }

  .yf-legal-contact {
    grid-template-columns: 1fr;
  }

  .yf-legal-section-head h2,
  .yf-legal-contact h2 {
    font-size: clamp(1.75rem, 9vw, 2.3rem);
    line-height: 1.1;
    text-wrap: wrap;
    word-break: break-word;
  }
}

/* ============================================================
   Accessibility
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
  #particle-canvas { display: none; }
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

.screen-reader-text {
  position: absolute;
  clip: rect(1px, 1px, 1px, 1px);
  width: 1px;
  height: 1px;
  overflow: hidden;
}