/* ============================================================
   庙街小巷 — 震魂科技项目子页面
   Extends the main site system (black + gold, Inter / Noto Sans SC)
   with warm ember accents for the 烟火气 human-story sections.
   ============================================================ */

:root {
  /* Surface */
  --bg: #000000;
  --bg-1: #0a0a0a;
  --bg-card: #111111;
  --bg-card-2: #171717;
  --warm-bg: #160d08;     /* deep coffee — human-warmth zones */
  --warm-card: #1e130c;

  /* Ink */
  --fg: #ededed;
  --fg-2: #c4c4c4;
  --fg-muted: #8a8a8a;
  --fg-dim: #555555;
  --rule: rgba(255, 255, 255, 0.08);
  --rule-2: rgba(255, 255, 255, 0.14);

  /* Gold — from main site */
  --gold-deep:   #8a6418;
  --gold-rich:   #c89a3a;
  --gold-bright: #f1cd6a;
  --gold-pale:   #fff1c2;

  /* Ember — warmth / 烟火气 */
  --ember:        #d4734e;
  --ember-bright: #e8895f;
  --ember-deep:   #b8351f;

  /* 楚韵 — jade / 青绿 for the points economy + 青铜暗金 */
  --jade:         #00d4aa;
  --jade-soft:    #4fe3c6;
  --jade-deep:    #0a8f76;
  --bronze:       #c49a3c;

  /* Type */
  --font-sans: "Inter", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --maxw: 1160px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

html, body {
  margin: 0;
  padding: 0;
  background: #0a0c0e;
  color: var(--fg);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  font-feature-settings: "ss01", "cv11";
}
body { overflow-x: hidden; background: transparent; }

/* ============================================================
   CHU INK-WASH LANDSCAPE — 水墨黄鹤楼 (dark shanshui)
   A misty ink-wash mountainscape: layered grey peaks fading into
   fog, the gold-eaved 黄鹤楼 pagoda rising through cloud, a low
   ember sun, distant sails, a vermilion seal and a sprig of plum.
   Kept on deep ink so the dark theme's gold/white text stays clear.
   ============================================================ */
.chu-bg {
  position: fixed; inset: 0; z-index: -2; pointer-events: none; overflow: hidden;
  background:
    /* legibility vignette toward the scrolling lower half */
    linear-gradient(180deg, rgba(0,0,0,0) 42%, rgba(0,0,0,0.28) 64%, rgba(0,0,0,0.60) 100%),
    /* low ember sun halo, upper-left */
    radial-gradient(24% 20% at 22% 24%, rgba(214,108,60,0.26) 0%, rgba(160,70,40,0.10) 42%, rgba(0,0,0,0) 72%),
    /* soft ink mist band across the middle */
    radial-gradient(120% 36% at 50% 52%, rgba(180,186,196,0.10) 0%, rgba(0,0,0,0) 60%),
    /* ink sky: charcoal -> warm rice-paper haze -> deep ink ground */
    linear-gradient(180deg,
      #11151b 0%,
      #1a2028 22%,
      #2b2e30 40%,
      #3a342c 52%,
      #241f1d 66%,
      #15131480 78%,
      #0a0a0c 100%);
}
.chu-art { position: fixed; inset: 0; z-index: -1; pointer-events: none; opacity: 0.9; }
.chu-art svg { width: 100%; height: 100%; display: block; }
.chu-art .chu-win { animation: chuFlicker 6s ease-in-out infinite; }
.chu-art .chu-mist { animation: chuDrift 16s ease-in-out infinite; }
.chu-art .chu-sun { animation: chuSun 7s ease-in-out infinite; }
@keyframes chuFlicker { 0%,100% { opacity: 0.8; } 50% { opacity: 1; } }
@keyframes chuDrift { 0%,100% { transform: translateX(0); opacity: 0.85; } 50% { transform: translateX(26px); opacity: 1; } }
@keyframes chuSun { 0%,100% { opacity: 0.85; } 50% { opacity: 1; } }
@media (prefers-reduced-motion: reduce) {
  .chu-art .chu-win, .chu-art .chu-mist, .chu-art .chu-sun { animation: none; }
}

a { color: inherit; text-decoration: none; }

/* ============================================================
   NAV — replicated from main site for brand consistency
   ============================================================ */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 40px;
  border-bottom: 1px solid var(--rule);
  background: rgba(0, 0, 0, 0.72);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
}
.nav-left, .nav-right { display: flex; align-items: center; gap: 28px; }
.nav-left { gap: 44px; }
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-search {
  display: inline-flex; align-items: center; justify-content: center;
  width: 32px; height: 32px; margin-left: -4px;
  border: none; background: transparent; color: var(--fg-muted);
  cursor: pointer; border-radius: 6px;
  transition: color 160ms ease, background 160ms ease;
}
.nav-search:hover { color: var(--fg); background: rgba(255,255,255,0.04); }
.nav-search svg { width: 18px; height: 18px; display: block; }
.nav-burger{display:none;flex-direction:column;gap:5px;width:40px;height:40px;align-items:center;justify-content:center;background:transparent;border:none;cursor:pointer;padding:0}
.nav-burger span{display:block;width:22px;height:2px;background:var(--fg);border-radius:2px;transition:transform .24s ease,opacity .2s ease}
.nav[data-mobile="true"] .nav-burger span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav[data-mobile="true"] .nav-burger span:nth-child(2){opacity:0}
.nav[data-mobile="true"] .nav-burger span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
@media(max-width:900px){
.nav-burger{display:flex;order:3}
.nav-search-wrap{display:none}
.nav-left .nav-links{display:flex;position:fixed;top:63px;left:0;right:0;flex-direction:column;align-items:stretch;gap:2px;background:rgba(8,8,10,.97);backdrop-filter:blur(20px) saturate(140%);-webkit-backdrop-filter:blur(20px) saturate(140%);border-top:1px solid var(--rule);border-bottom:1px solid var(--rule);padding:14px 22px 22px;max-height:calc(100vh - 63px);overflow-y:auto;transform:translateY(-12px);opacity:0;pointer-events:none;transition:opacity .22s ease,transform .22s ease;z-index:90}
.nav[data-mobile="true"] .nav-left .nav-links{transform:none;opacity:1;pointer-events:auto}
.nav-item{display:block;width:100%;border-top:1px solid var(--rule)}
.nav-item:first-child{border-top:none}
.nav-link,.nav-link-trigger{width:100%;justify-content:space-between;padding:14px 2px;font-size:16px}
.nav-link-caret{display:none}
.nav-item .mega{position:static;opacity:1;transform:none;pointer-events:auto;min-width:0;width:100%;background:transparent;border:none;box-shadow:none;padding:0 0 10px 4px;backdrop-filter:none;-webkit-backdrop-filter:none}
.nav-item::after{display:none}
.mega-eyebrow{display:none}
.mega-item{padding:9px 10px}
.mega-item-name{font-size:17px}
.mega-item-arrow{opacity:1;transform:none}
}
.nav-search-wrap { display: inline-flex; align-items: center; }
.nav-search-input { width: 0; opacity: 0; padding: 6px 0; border: none; border-bottom: 1px solid transparent; background: transparent; color: var(--fg); font-family: "Noto Sans SC", var(--font-sans); font-size: 13.5px; outline: none; transition: width 240ms cubic-bezier(.2,.7,.2,1), opacity 200ms ease, margin-left 240ms ease, border-color 240ms ease; }
.nav-search-input::placeholder { color: var(--fg-dim); }
.nav-search-wrap[data-search-open="true"] .nav-search-input { width: 200px; opacity: 1; margin-left: 4px; border-bottom-color: rgba(255,255,255,0.18); }
.nav-search-wrap[data-search-open="true"] .nav-search { color: var(--fg); }
.wordmark {
  display: flex; align-items: center; gap: 10px;
  font-weight: 600; font-size: 15px; letter-spacing: -0.01em; color: var(--fg);
}
.wordmark-en { color: var(--fg); font-weight: 600; font-size: 16px; letter-spacing: -0.01em; }

.nav a.nav-link {
  color: var(--fg-muted); font-size: 13.5px; font-weight: 450;
  letter-spacing: -0.005em; transition: color 160ms ease;
}
.nav a.nav-link:hover, .nav a.nav-link.is-active { color: var(--fg); }

/* 项目 mega-menu */
.nav-item { position: relative; display: inline-flex; }
.nav-link-trigger {
  display: inline-flex; align-items: center; gap: 5px;
  background: transparent; border: none; padding: 0; margin: 0; cursor: pointer;
  font-family: "Noto Sans SC", var(--font-sans);
  font-size: 13.5px; font-weight: 450; letter-spacing: -0.005em;
  color: var(--fg); transition: color 160ms ease;
}
.nav-link-caret { width: 11px; height: 11px; color: var(--gold-rich); transition: transform 200ms ease, color 160ms ease; }
.nav-item[data-open="true"] .nav-link-caret { transform: rotate(180deg); }
.mega {
  position: absolute; top: calc(100% + 20px); left: -24px; min-width: 460px;
  background: rgba(10, 10, 10, 0.30);
  backdrop-filter: blur(28px) saturate(150%); -webkit-backdrop-filter: blur(28px) saturate(150%);
  border: 1px solid var(--rule); border-radius: 14px;
  box-shadow: 0 24px 64px rgba(0,0,0,0.6), 0 2px 8px rgba(0,0,0,0.5);
  padding: 22px; opacity: 0; transform: translateY(-8px); pointer-events: none;
  transition: opacity 200ms ease, transform 200ms cubic-bezier(.2,.7,.2,1); z-index: 60;
}
.nav-item[data-open="true"] .mega,
.nav-item:hover .mega { opacity: 1; transform: translateY(0); pointer-events: auto; }
.nav-item::after { content: ""; position: absolute; top: 100%; left: -24px; width: 460px; height: 22px; opacity: 0; pointer-events: none; }
.nav-item:hover::after { pointer-events: auto; }
.mega-eyebrow {
  font-family: var(--font-mono); font-size: 10.5px; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--fg-muted);
  padding: 4px 14px 14px; border-bottom: 1px solid var(--rule); margin-bottom: 6px;
}
.mega-list { display: flex; flex-direction: column; }
.mega-item { display: flex; align-items: baseline; gap: 14px; padding: 12px 14px; border-radius: 8px; transition: background 160ms ease; }
.mega-item:hover { background: rgba(255,255,255,0.045); }
.mega-item-name {
  font-family: "Noto Sans SC", var(--font-sans); font-size: 22px; font-weight: 500;
  letter-spacing: 0.01em; color: var(--fg); line-height: 1.1; transition: color 160ms ease;
}
.mega-item:hover .mega-item-name { color: var(--gold-bright); }
.mega-item-en { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.04em; color: var(--fg-dim); transition: color 160ms ease; }
.mega-item:hover .mega-item-en { color: var(--fg-muted); }
.mega-item-arrow {
  margin-left: auto; align-self: center; color: var(--fg-dim); font-size: 15px;
  opacity: 0; transform: translateX(-4px);
  transition: opacity 160ms ease, transform 160ms ease, color 160ms ease;
}
.mega-item:hover .mega-item-arrow { opacity: 1; transform: translateX(0); color: var(--gold-bright); }
/* current page marker — subtle, does NOT mimic hover */
.mega-item.is-active .mega-item-name { color: var(--fg-2); }
.mega-item.is-active .mega-item-name::after { content: "· 当前"; font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.06em; color: var(--gold-rich); margin-left: 9px; vertical-align: 2px; }

/* right cluster */
.nav-right { gap: 4px; }
.lang-switcher { position: relative; margin-right: 8px; }
.lang-trigger {
  display: inline-flex; align-items: center; gap: 6px; padding: 5px 8px;
  background: transparent; border: none; color: var(--fg-muted);
  font-family: "Noto Sans SC", var(--font-sans); font-size: 12.5px; font-weight: 450;
  border-radius: 6px; cursor: pointer; transition: color 160ms ease, background 160ms ease;
}
.lang-trigger:hover, .lang-switcher[data-open="true"] .lang-trigger { color: var(--fg); background: rgba(255,255,255,0.04); }
.lang-trigger .globe { width: 13px; height: 13px; }
.lang-trigger .caret { width: 9px; height: 9px; color: var(--fg-dim); transition: transform 180ms ease; }
.lang-switcher[data-open="true"] .lang-trigger .caret { transform: rotate(180deg); color: var(--fg-muted); }
.lang-menu {
  position: absolute; top: calc(100% + 8px); right: 0; min-width: 184px; margin: 0; padding: 6px;
  list-style: none; background: #0c0c0c; border: 1px solid var(--rule); border-radius: 8px;
  box-shadow: 0 16px 40px rgba(0,0,0,0.55), 0 2px 6px rgba(0,0,0,0.4);
  opacity: 0; transform: translateY(-4px); pointer-events: none;
  transition: opacity 160ms ease, transform 160ms ease; z-index: 50;
}
.lang-switcher[data-open="true"] .lang-menu { opacity: 1; transform: translateY(0); pointer-events: auto; }
.lang-menu li { margin: 0; }
.lang-item {
  display: flex; align-items: center; justify-content: space-between; gap: 12px; width: 100%;
  padding: 9px 12px; background: transparent; border: none; border-radius: 5px;
  color: var(--fg-2); font-family: inherit; font-size: 13.5px; font-weight: 450;
  text-align: left; cursor: pointer; transition: background 140ms ease, color 140ms ease;
}
.lang-item:hover { background: rgba(255,255,255,0.05); color: var(--fg); }
.lang-item-native { color: var(--fg); }
.lang-item-name { font-family: var(--font-sans); color: var(--fg-muted); font-size: 12px; letter-spacing: 0.01em; }
.lang-item[aria-current="true"] .lang-item-native { color: var(--gold-bright); }
.lang-item[aria-current="true"]::after { content: "✓"; margin-left: 4px; color: var(--gold-bright); font-size: 12px; }
.lang-item[data-rtl="true"] .lang-item-native { direction: rtl; }
.auth-link {
  padding: 5px 4px; background: transparent; border: none; color: var(--fg-muted);
  font-family: "Noto Sans SC", var(--font-sans); font-size: 12.5px; font-weight: 450; transition: color 160ms ease;
}
.auth-link:hover { color: var(--fg); }
.btn-signup {
  display: inline-flex; align-items: center; padding: 5px 8px; margin-left: 6px;
  background: transparent; color: var(--fg);
  font-family: "Noto Sans SC", var(--font-sans); font-size: 12.5px; font-weight: 500; white-space: nowrap;
  text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 4px;
  text-decoration-color: rgba(255,255,255,0.35); transition: text-decoration-color 160ms ease;
}
.btn-signup:hover { text-decoration-color: var(--fg); }

/* ============================================================
   LAYOUT PRIMITIVES
   ============================================================ */
.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 32px; }
.section { position: relative; padding: 104px 0; }
.section--warm { background: var(--warm-bg); }
.section--tight { padding: 84px 0; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 12px;
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.2em;
  text-transform: uppercase; color: var(--gold-rich); margin-bottom: 22px;
}
.eyebrow::before { content: ""; width: 28px; height: 1px; background: currentColor; opacity: 0.7; }
.eyebrow--ember { color: var(--ember); }

.section-title {
  font-family: "Noto Sans SC", var(--font-sans);
  font-size: clamp(28px, 3.4vw, 44px); font-weight: 600; line-height: 1.18;
  letter-spacing: -0.01em; margin: 0 0 18px; color: var(--fg); text-wrap: balance;
}
.section-intro {
  font-family: "Noto Sans SC", var(--font-sans);
  font-size: clamp(15px, 1.2vw, 18px); line-height: 1.7; color: var(--fg-muted);
  max-width: 640px; margin: 0; text-wrap: pretty;
}
.section-head { margin-bottom: 56px; }

/* Reveal on scroll */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity 700ms cubic-bezier(.2,.7,.2,1), transform 700ms cubic-bezier(.2,.7,.2,1); }
.reveal.in { opacity: 1; transform: none; }
.reveal[data-d="1"] { transition-delay: 80ms; }
.reveal[data-d="2"] { transition-delay: 160ms; }
.reveal[data-d="3"] { transition-delay: 240ms; }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative; min-height: calc(100vh - 0px);
  display: flex; flex-direction: column; justify-content: center;
  padding: 120px 0 90px; overflow: hidden;
}
.hero-photo { position: absolute; inset: 0; z-index: 0; }
.hero-photo image-slot { width: 100%; height: 100%; display: block; }
.hero-scrim {
  position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background:
    linear-gradient(180deg, rgba(0,0,0,0.55) 0%, rgba(0,0,0,0.30) 32%, rgba(0,0,0,0.62) 72%, rgba(0,0,0,0.92) 100%),
    radial-gradient(120% 90% at 18% 30%, rgba(212,115,78,0.16) 0%, rgba(0,0,0,0) 55%),
    linear-gradient(90deg, rgba(0,0,0,0.55) 0%, rgba(0,0,0,0.10) 55%, rgba(0,0,0,0) 100%);
}
.hero-inner { position: relative; z-index: 2; }
.breadcrumb {
  display: flex; align-items: center; gap: 10px; font-size: 13px;
  font-family: "Noto Sans SC", var(--font-sans); color: var(--fg-muted); margin-bottom: 36px;
}
.breadcrumb a { transition: color 160ms ease; }
.breadcrumb a:hover { color: var(--fg); }
.breadcrumb .sep { color: var(--fg-dim); }
.breadcrumb .here { color: var(--gold-bright); }

.hero-title {
  font-family: "Noto Sans SC", var(--font-sans);
  font-size: clamp(40px, 6.4vw, 84px); font-weight: 600; line-height: 1.1;
  letter-spacing: 0.005em; margin: 0 0 22px; padding-bottom: 0.08em;
  background-image: linear-gradient(100deg, #c89a3a 0%, #f1cd6a 30%, #fbf4e2 50%, #f1cd6a 70%, #d4734e 100%);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; color: transparent;
  filter: drop-shadow(0 4px 30px rgba(200,154,58,0.18));
}
.hero-title .plus {
  font-family: var(--font-sans);
  font-weight: 300;
  font-size: 0.62em;
  vertical-align: 0.08em;
  margin: 0 0.12em;
  -webkit-text-fill-color: var(--gold-rich);
  color: var(--gold-rich);
}
.hero-sub {
  font-family: "Noto Sans SC", var(--font-sans);
  font-size: clamp(20px, 2.4vw, 32px); font-weight: 400; color: var(--fg);
  margin: 0 0 40px; letter-spacing: 0.01em;
}
.hero-meta { display: flex; flex-wrap: wrap; gap: 12px; }
.chip {
  display: inline-flex; align-items: center; gap: 9px; white-space: nowrap;
  padding: 9px 16px; border-radius: 999px; border: 1px solid var(--rule-2);
  background: rgba(0,0,0,0.4); backdrop-filter: blur(8px);
  font-family: "Noto Sans SC", var(--font-sans); font-size: 13.5px; color: var(--fg-2);
}
.chip svg { width: 15px; height: 15px; flex: none; }
.chip--loc svg { color: var(--ember-bright); }
.chip--role { border-color: rgba(241,205,106,0.35); background: rgba(241,205,106,0.06); color: var(--gold-pale); }
.chip--role svg { color: var(--gold-bright); }
.chip strong { color: var(--fg); font-weight: 600; }

.hero-scroll {
  position: absolute; left: 32px; bottom: 30px; z-index: 2;
  display: flex; align-items: center; gap: 10px;
  font-family: var(--font-mono); font-size: 10.5px; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--fg-dim);
}
.hero-scroll .dot { width: 5px; height: 5px; border-radius: 999px; background: var(--gold-bright); animation: bob 1.8s ease-in-out infinite; }
@keyframes bob { 0%,100% { opacity: .4; transform: translateY(0);} 50% { opacity: 1; transform: translateY(3px);} }

/* ============================================================
   OVERVIEW 2x2 CARDS
   ============================================================ */
.ov-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.ov-card {
  position: relative; padding: 32px; border-radius: 16px;
  background: var(--bg-card); border: 1px solid var(--rule);
  display: flex; flex-direction: column; gap: 14px; min-height: 168px;
  transition: border-color 200ms ease, background 200ms ease, transform 200ms ease;
}
.ov-card:hover { border-color: var(--rule-2); transform: translateY(-2px); }
.ov-icon {
  width: 40px; height: 40px; border-radius: 10px; display: grid; place-items: center;
  background: rgba(241,205,106,0.08); border: 1px solid rgba(241,205,106,0.18); color: var(--gold-bright);
}
.ov-icon svg { width: 20px; height: 20px; }
.ov-label { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--fg-muted); }
.ov-value { font-family: "Noto Sans SC", var(--font-sans); font-size: 18px; font-weight: 500; line-height: 1.5; color: var(--fg); }
.ov-value span { color: var(--fg-muted); font-weight: 400; font-size: 15px; }
.ov-card--accent { background: linear-gradient(180deg, rgba(212,115,78,0.10), rgba(184,53,31,0.05)); border-color: rgba(212,115,78,0.30); }
.ov-card--accent .ov-icon { background: rgba(212,115,78,0.12); border-color: rgba(212,115,78,0.30); color: var(--ember-bright); }
.ov-card--accent .ov-value strong { color: var(--ember-bright); }

/* ============================================================
   THREE WINDOWS
   ============================================================ */
.win-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.win-card {
  position: relative; padding: 34px 30px; border-radius: 16px; overflow: hidden;
  background: var(--bg-card); border: 1px solid var(--rule);
  display: flex; flex-direction: column; gap: 18px;
  transition: border-color 200ms ease, transform 200ms ease;
}
.win-card:hover { border-color: var(--rule-2); transform: translateY(-3px); }
.win-card::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 2px;
  background: linear-gradient(90deg, var(--gold-rich), transparent);
}
.win-no { font-family: var(--font-mono); font-size: 12px; color: var(--gold-rich); letter-spacing: 0.1em; }
.win-icon { width: 44px; height: 44px; color: var(--gold-bright); }
.win-icon svg { width: 100%; height: 100%; }
.win-title { font-family: "Noto Sans SC", var(--font-sans); font-size: 22px; font-weight: 600; color: var(--fg); margin: 0; }
.win-desc { font-family: "Noto Sans SC", var(--font-sans); font-size: 15px; line-height: 1.65; color: var(--fg-muted); margin: 0; flex: 1; }
.win-stat { padding-top: 18px; border-top: 1px solid var(--rule); }
.win-stat-num { font-family: var(--font-mono); font-size: 22px; font-weight: 600; color: var(--gold-bright); letter-spacing: -0.01em; }
.win-stat-label { font-family: "Noto Sans SC", var(--font-sans); font-size: 12.5px; color: var(--fg-muted); margin-top: 4px; }

/* ============================================================
   ROLE — IGNITER (persuasion core)
   ============================================================ */
.role-stack { display: flex; flex-direction: column; align-items: center; gap: 0; margin-bottom: 64px; }
.role-tier {
  position: relative; width: 100%; max-width: 720px; border-radius: 14px;
  padding: 22px 28px; display: flex; align-items: center; gap: 20px;
  background: var(--bg-card); border: 1px solid var(--rule);
}
.role-tier .r-ic { width: 34px; height: 34px; flex: none; color: var(--fg-muted); }
.role-tier .r-ic svg { width: 100%; height: 100%; }
.role-tier .r-role { font-family: "Noto Sans SC", var(--font-sans); font-size: 19px; font-weight: 600; color: var(--fg); }
.role-tier .r-desc { font-family: "Noto Sans SC", var(--font-sans); font-size: 14px; color: var(--fg-muted); margin-top: 3px; }
.role-conn { width: 2px; height: 22px; background: linear-gradient(180deg, var(--rule-2), var(--gold-rich)); }
.role-tier--fire {
  background: linear-gradient(120deg, rgba(241,205,106,0.12), rgba(212,115,78,0.10));
  border: 1px solid rgba(241,205,106,0.45);
  box-shadow: 0 0 0 1px rgba(241,205,106,0.10), 0 12px 48px rgba(200,154,58,0.16);
  transform: scale(1.04);
}
.role-tier--fire .r-ic { color: var(--ember-bright); }
.role-tier--fire .r-role { color: var(--gold-pale); }
.role-tier--fire .r-tag {
  margin-left: auto; font-family: var(--font-mono); font-size: 10.5px; letter-spacing: 0.14em;
  text-transform: uppercase; color: #1a1206; background: var(--gold-bright);
  padding: 4px 10px; border-radius: 999px; font-weight: 600;
}

.cap-head { font-family: "Noto Sans SC", var(--font-sans); font-size: 14px; letter-spacing: 0.04em; color: var(--fg-muted); text-align: center; margin: 0 0 22px; }
.cap-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.cap-card {
  padding: 22px 20px; border-radius: 13px; background: var(--bg-card-2); border: 1px solid var(--rule);
  transition: border-color 180ms ease, transform 180ms ease;
}
.cap-card:hover { border-color: rgba(241,205,106,0.30); transform: translateY(-2px); }
.cap-no { font-family: var(--font-mono); font-size: 11px; color: var(--gold-rich); letter-spacing: 0.08em; }
.cap-title { font-family: "Noto Sans SC", var(--font-sans); font-size: 16px; font-weight: 600; color: var(--fg); margin: 10px 0 12px; }
.cap-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 6px; }
.cap-list li { font-family: "Noto Sans SC", var(--font-sans); font-size: 13px; color: var(--fg-muted); padding-left: 14px; position: relative; }
.cap-list li::before { content: ""; position: absolute; left: 0; top: 8px; width: 4px; height: 4px; border-radius: 999px; background: var(--gold-rich); }

.role-quote {
  margin: 64px auto 0; max-width: 880px; text-align: center;
  font-family: "Noto Sans SC", var(--font-sans);
  font-size: clamp(24px, 3.2vw, 40px); font-weight: 600; line-height: 1.35; letter-spacing: -0.005em;
  color: var(--fg); text-wrap: balance;
}
.role-quote em { font-style: normal; color: var(--gold-bright); }
.role-quote .mark { color: var(--ember); font-weight: 700; }

/* ============================================================
   AGENT ARCHITECTURE
   ============================================================ */
.arch { max-width: 860px; margin: 0 auto; }
.arch-geo {
  text-align: center; padding: 20px 28px; border-radius: 14px; margin-bottom: 6px;
  background: linear-gradient(180deg, rgba(241,205,106,0.14), rgba(241,205,106,0.04));
  border: 1px solid rgba(241,205,106,0.40);
}
.arch-geo .g-name { font-family: "Noto Sans SC", var(--font-sans); font-size: 18px; font-weight: 600; color: var(--gold-pale); }
.arch-geo .g-sub { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--gold-rich); margin-top: 4px; }
.arch-up { display: grid; place-items: center; height: 30px; color: var(--gold-rich); }
.arch-up svg { width: 18px; height: 18px; }
.layer {
  display: grid; grid-template-columns: 88px 1fr auto; align-items: center; gap: 22px;
  padding: 24px 28px; border-radius: 14px; background: var(--bg-card); border: 1px solid var(--rule);
  margin-bottom: 10px; transition: border-color 200ms ease, transform 200ms ease;
}
.layer:hover { border-color: var(--rule-2); transform: translateX(4px); }
.layer-tag {
  font-family: var(--font-mono); font-weight: 700; font-size: 20px; color: var(--gold-bright);
  display: flex; flex-direction: column; gap: 3px;
}
.layer-tag .lt-sub { font-size: 10px; font-weight: 500; letter-spacing: 0.12em; color: var(--fg-dim); }
.layer-name { }
.layer-name .ln-cn { font-family: "Noto Sans SC", var(--font-sans); font-size: 18px; font-weight: 600; color: var(--fg); }
.layer-name .ln-en { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.08em; color: var(--fg-muted); margin-top: 3px; }
.layer-feat { display: flex; gap: 8px; flex-wrap: wrap; justify-content: flex-end; max-width: 320px; }
.layer-feat span {
  font-family: "Noto Sans SC", var(--font-sans); font-size: 12.5px; color: var(--fg-2);
  padding: 5px 11px; border-radius: 999px; background: rgba(255,255,255,0.04); border: 1px solid var(--rule);
}
.arch-loop {
  margin-top: 22px; text-align: center; font-family: var(--font-mono);
  font-size: 12px; letter-spacing: 0.08em; color: var(--fg-muted);
}
.arch-loop b { color: var(--gold-bright); font-weight: 600; }

/* ============================================================
   STAT STRIP (dashboard numbers)
   ============================================================ */
.stat-strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stat { display: flex; flex-direction: column; gap: 8px; }
.stat-num {
  font-family: var(--font-mono); font-weight: 700; line-height: 1; letter-spacing: -0.02em;
  font-size: clamp(40px, 5vw, 64px); color: var(--ember-bright);
  font-feature-settings: "tnum"; font-variant-numeric: tabular-nums;
}
.stat-num.gold { color: var(--gold-bright); }
.stat-label { font-family: "Noto Sans SC", var(--font-sans); font-size: 14px; color: var(--fg-muted); }
.stat-strip--3 { grid-template-columns: repeat(3, 1fr); }

/* ============================================================
   CASE: BEFORE / AFTER
   ============================================================ */
.case-photo { border-radius: 16px; overflow: hidden; border: 1px solid var(--rule); }
.case-photo image-slot { width: 100%; height: 100%; display: block; }
.ba { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-bottom: 48px; }
.ba-col { border-radius: 16px; padding: 30px; border: 1px solid var(--rule); }
.ba-col--before { background: var(--bg-card); }
.ba-col--after { background: linear-gradient(180deg, rgba(212,115,78,0.10), rgba(184,53,31,0.04)); border-color: rgba(212,115,78,0.30); }
.ba-tag { display: inline-flex; align-items: center; gap: 8px; font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; margin-bottom: 20px; }
.ba-col--before .ba-tag { color: var(--fg-muted); }
.ba-col--after .ba-tag { color: var(--ember-bright); }
.ba-row { display: flex; gap: 14px; padding: 14px 0; border-top: 1px solid var(--rule); }
.ba-row:first-of-type { border-top: none; }
.ba-row .k { font-family: "Noto Sans SC", var(--font-sans); font-size: 13px; color: var(--fg-dim); width: 88px; flex: none; }
.ba-row .v { font-family: "Noto Sans SC", var(--font-sans); font-size: 15px; color: var(--fg-2); line-height: 1.55; }
.ba-col--after .ba-row .v strong { color: var(--ember-bright); font-weight: 600; }

/* ============================================================
   CASE: GEO ANSWER COMPARISON
   ============================================================ */
.geo-compare { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-bottom: 48px; }
.geo-ans { border-radius: 16px; padding: 28px 30px; border: 1px solid var(--rule); background: var(--bg-card); }
.geo-ans .ga-head { display: flex; align-items: center; gap: 10px; margin-bottom: 18px; font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; }
.geo-ans .ga-dot { width: 18px; height: 18px; border-radius: 999px; display: grid; place-items: center; flex: none; }
.geo-ans--no .ga-dot { background: rgba(255,255,255,0.06); color: var(--fg-muted); }
.geo-ans--no .ga-head { color: var(--fg-muted); }
.geo-ans--yes { background: linear-gradient(180deg, rgba(241,205,106,0.10), rgba(241,205,106,0.03)); border-color: rgba(241,205,106,0.35); }
.geo-ans--yes .ga-dot { background: var(--gold-bright); color: #1a1206; }
.geo-ans--yes .ga-head { color: var(--gold-bright); }
.geo-ans .ga-body { font-family: "Noto Sans SC", var(--font-sans); font-size: 15px; line-height: 1.7; color: var(--fg-2); margin: 0; }
.geo-ans--yes .ga-body strong { color: var(--gold-pale); font-weight: 600; }
.geo-note { text-align: center; font-family: "Noto Sans SC", var(--font-sans); font-size: 13px; color: var(--fg-dim); margin-top: 28px; }
.geo-note a { color: var(--gold-rich); text-decoration: underline; text-underline-offset: 3px; }

/* ============================================================
   CTA
   ============================================================ */
.cta-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.cta-card {
  display: flex; align-items: center; gap: 20px; padding: 28px 30px; border-radius: 16px;
  background: var(--bg-card); border: 1px solid var(--rule);
  transition: border-color 200ms ease, background 200ms ease, transform 200ms ease;
}
.cta-card:hover { border-color: var(--rule-2); background: var(--bg-card-2); transform: translateY(-2px); }
.cta-ic { width: 46px; height: 46px; flex: none; border-radius: 12px; display: grid; place-items: center; background: rgba(241,205,106,0.08); border: 1px solid rgba(241,205,106,0.18); color: var(--gold-bright); }
.cta-ic svg { width: 22px; height: 22px; }
.cta-body { flex: 1; }
.cta-body .ct-title { font-family: "Noto Sans SC", var(--font-sans); font-size: 17px; font-weight: 600; color: var(--fg); }
.cta-body .ct-sub { font-family: "Noto Sans SC", var(--font-sans); font-size: 13px; color: var(--fg-muted); margin-top: 4px; }
.cta-arrow { color: var(--fg-dim); font-size: 18px; transition: transform 180ms ease, color 180ms ease; }
.cta-card:hover .cta-arrow { transform: translateX(3px); color: var(--gold-bright); }
.cta-card--ext .cta-ic { background: rgba(212,115,78,0.10); border-color: rgba(212,115,78,0.25); color: var(--ember-bright); }

/* ============================================================
   FOOTER
   ============================================================ */
.footer { border-top: 1px solid var(--rule); padding: 56px 0 40px; background: var(--bg); }
.footer-top { display: flex; justify-content: space-between; align-items: flex-start; gap: 40px; flex-wrap: wrap; margin-bottom: 44px; }
.footer-brand .fb-mark { font-size: 18px; font-weight: 600; color: var(--fg); }
.footer-brand .fb-tag { font-family: "Noto Sans SC", var(--font-sans); font-size: 13px; color: var(--fg-muted); margin-top: 10px; max-width: 280px; line-height: 1.6; }
.footer-cols { display: flex; gap: 64px; flex-wrap: wrap; }
.footer-col h4 { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--fg-dim); margin: 0 0 16px; font-weight: 500; }
.footer-col a { display: block; font-family: "Noto Sans SC", var(--font-sans); font-size: 14px; color: var(--fg-muted); margin-bottom: 11px; transition: color 160ms ease; }
.footer-col a:hover { color: var(--fg); }
.footer-bot { display: flex; justify-content: space-between; align-items: center; gap: 20px; padding-top: 28px; border-top: 1px solid var(--rule); flex-wrap: wrap; }
.footer-bot .fb-copy { font-family: var(--font-mono); font-size: 11.5px; letter-spacing: 0.04em; color: var(--fg-dim); }
.footer-bot .fb-links { display: flex; gap: 24px; }
.footer-bot .fb-links a { font-family: "Noto Sans SC", var(--font-sans); font-size: 12.5px; color: var(--fg-dim); transition: color 160ms ease; }
.footer-bot .fb-links a:hover { color: var(--fg-muted); }

/* ============================================================
   QUESTION HERO — §1 opening line
   ============================================================ */
.qline {
  font-family: "Noto Sans SC", var(--font-sans);
  font-size: clamp(30px, 4.4vw, 60px); font-weight: 600; line-height: 1.28;
  letter-spacing: -0.01em; color: var(--fg); text-wrap: balance; margin: 0 0 20px;
}
.qline .q { color: var(--gold-bright); }
.qsub {
  font-family: "Noto Sans SC", var(--font-sans);
  font-size: clamp(16px, 1.5vw, 21px); line-height: 1.7; color: var(--fg-muted);
  max-width: 640px; margin: 0; text-wrap: pretty;
}
.qsub b { color: var(--fg-2); font-weight: 500; }

/* mini before/after pair under the question */
.qcompare { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 52px; }
.qcard { border-radius: 16px; padding: 28px 30px; border: 1px solid var(--rule); background: var(--bg-card); }
.qcard--yes { background: linear-gradient(180deg, rgba(212,115,78,0.10), rgba(184,53,31,0.04)); border-color: rgba(212,115,78,0.32); }
.qcard .qc-tag { display: inline-flex; align-items: center; gap: 9px; font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; margin-bottom: 16px; }
.qcard--no .qc-tag { color: var(--fg-muted); }
.qcard--yes .qc-tag { color: var(--ember-bright); }
.qc-dot { width: 18px; height: 18px; border-radius: 999px; display: grid; place-items: center; flex: none; }
.qcard--no .qc-dot { background: rgba(255,255,255,0.06); color: var(--fg-muted); }
.qcard--yes .qc-dot { background: var(--ember); color: #1a0f0a; }
.qc-body { font-family: "Noto Sans SC", var(--font-sans); font-size: 15.5px; line-height: 1.72; color: var(--fg-2); margin: 0; }
.qcard--yes .qc-body strong { color: var(--ember-bright); font-weight: 600; }
.qc-note { font-family: "Noto Sans SC", var(--font-sans); font-size: 13px; color: var(--fg-dim); margin: 14px 0 0; }

/* ============================================================
   BIG BEFORE / AFTER — §2 core visual
   ============================================================ */
.bigba { display: grid; grid-template-columns: 1fr auto 1fr; gap: 0; align-items: stretch; }
.bigba-col { border-radius: 18px; padding: 38px; border: 1px solid var(--rule); display: flex; flex-direction: column; }
.bigba-col--before { background: var(--bg-card); }
.bigba-col--after { background: linear-gradient(165deg, rgba(241,205,106,0.10), rgba(212,115,78,0.07) 60%, rgba(184,53,31,0.04)); border-color: rgba(241,205,106,0.38); }
.bigba-head { display: flex; align-items: center; gap: 11px; margin-bottom: 26px; }
.bigba-head .bb-ic { width: 30px; height: 30px; border-radius: 8px; display: grid; place-items: center; flex: none; }
.bigba-col--before .bb-ic { background: rgba(255,255,255,0.05); color: var(--fg-muted); }
.bigba-col--after .bb-ic { background: var(--gold-bright); color: #1a1206; }
.bigba-head .bb-label { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; }
.bigba-col--before .bb-label { color: var(--fg-muted); }
.bigba-col--after .bb-label { color: var(--gold-bright); }
.bigba-quote {
  font-family: "Noto Sans SC", var(--font-sans); font-size: clamp(18px, 1.7vw, 23px);
  line-height: 1.7; margin: 0 0 26px; flex: 1;
}
.bigba-col--before .bigba-quote { color: var(--fg-muted); }
.bigba-col--after .bigba-quote { color: var(--fg); }
.bigba-col--after .bigba-quote strong { color: var(--gold-pale); font-weight: 600; }
.bigba-verdict { display: flex; flex-direction: column; gap: 8px; padding-top: 22px; border-top: 1px solid var(--rule); }
.bigba-col--before .bigba-verdict { border-color: rgba(255,255,255,0.07); }
.bigba-col--after .bigba-verdict { border-color: rgba(241,205,106,0.20); }
.bv-main { font-family: "Noto Sans SC", var(--font-sans); font-size: 15px; font-weight: 600; }
.bigba-col--before .bv-main { color: var(--fg-2); }
.bigba-col--after .bv-main { color: var(--ember-bright); }
.bv-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.bv-tags span { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.02em; padding: 4px 10px; border-radius: 999px; }
.bigba-col--before .bv-tags span { color: var(--fg-dim); background: rgba(255,255,255,0.04); border: 1px solid var(--rule); }
.bigba-col--after .bv-tags span { color: var(--gold-pale); background: rgba(241,205,106,0.10); border: 1px solid rgba(241,205,106,0.20); }
.bigba-mid { display: flex; align-items: center; justify-content: center; width: 72px; }
.bigba-mid .bm-ring { width: 52px; height: 52px; border-radius: 999px; display: grid; place-items: center; background: rgba(241,205,106,0.10); border: 1px solid rgba(241,205,106,0.30); color: var(--gold-bright); }
.bigba-mid .bm-ring svg { width: 22px; height: 22px; }
.bigba-caption { text-align: center; margin: 36px auto 0; font-family: "Noto Sans SC", var(--font-sans); font-size: clamp(18px, 2vw, 26px); font-weight: 500; color: var(--fg); text-wrap: balance; }
.bigba-caption em { font-style: normal; color: var(--gold-bright); }

/* ============================================================
   CHAT BUBBLES — §3 scenario dialogues
   ============================================================ */
.chat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.chat-card {
  border-radius: 18px; padding: 24px; border: 1px solid var(--rule);
  background: var(--bg-card); display: flex; flex-direction: column; gap: 14px;
  transition: border-color 200ms ease, transform 200ms ease;
}
.chat-card:hover { border-color: var(--rule-2); transform: translateY(-3px); }
.bubble { max-width: 86%; padding: 13px 16px; font-family: "Noto Sans SC", var(--font-sans); font-size: 14px; line-height: 1.6; }
.bubble--user {
  align-self: flex-end; border-radius: 16px 16px 5px 16px;
  background: rgba(241,205,106,0.14); border: 1px solid rgba(241,205,106,0.22);
  color: var(--gold-pale); font-weight: 500;
}
.bubble--ai {
  align-self: flex-start; border-radius: 16px 16px 16px 5px;
  background: rgba(255,255,255,0.05); border: 1px solid var(--rule); color: var(--fg-2);
}
.bubble--ai strong { color: var(--gold-bright); font-weight: 600; }
.chat-avatar { display: flex; align-items: center; gap: 9px; font-family: var(--font-mono); font-size: 10.5px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--fg-dim); }
.chat-avatar .ca-dot { width: 16px; height: 16px; border-radius: 999px; display: grid; place-items: center; background: rgba(241,205,106,0.10); color: var(--gold-bright); flex: none; }
.chat-avatar .ca-dot svg { width: 10px; height: 10px; }
.chat-effect { margin-top: 4px; padding-top: 16px; border-top: 1px dashed var(--rule); font-family: "Noto Sans SC", var(--font-sans); font-size: 12.5px; line-height: 1.6; color: var(--fg-muted); }
.chat-effect b { color: var(--ember-bright); font-weight: 600; }
.chat-caption { text-align: center; margin: 48px auto 0; max-width: 820px; font-family: "Noto Sans SC", var(--font-sans); font-size: clamp(19px, 2.1vw, 28px); font-weight: 600; line-height: 1.45; color: var(--fg); text-wrap: balance; }
.chat-caption em { font-style: normal; color: var(--gold-bright); }

/* ============================================================
   DATA NOTE — §4
   ============================================================ */
.data-note { text-align: center; margin: 44px auto 0; max-width: 720px; font-family: "Noto Sans SC", var(--font-sans); font-size: clamp(17px, 1.8vw, 22px); line-height: 1.6; color: var(--fg-2); }
.data-note strong { color: var(--gold-bright); font-weight: 600; }

/* ============================================================
   MEMORY ROWS — §5 what 震魂 did
   ============================================================ */
.mem-lead { text-align: center; max-width: 860px; margin: 0 auto 56px; font-family: "Noto Sans SC", var(--font-sans); font-size: clamp(26px, 3.4vw, 44px); font-weight: 600; line-height: 1.32; letter-spacing: -0.01em; color: var(--fg); text-wrap: balance; }
.mem-lead em { font-style: normal; color: var(--gold-bright); }
.mem-rows { max-width: 820px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
.mem-row { display: grid; grid-template-columns: 56px 1fr; gap: 22px; align-items: center; padding: 24px 28px; border-radius: 14px; background: var(--bg-card); border: 1px solid var(--rule); transition: border-color 200ms ease, transform 200ms ease; }
.mem-row:hover { border-color: var(--rule-2); transform: translateX(4px); }
.mem-ic { width: 48px; height: 48px; border-radius: 12px; display: grid; place-items: center; background: rgba(241,205,106,0.08); border: 1px solid rgba(241,205,106,0.18); color: var(--gold-bright); }
.mem-ic svg { width: 24px; height: 24px; }
.mem-text { font-family: "Noto Sans SC", var(--font-sans); font-size: clamp(15px, 1.4vw, 18px); line-height: 1.6; color: var(--fg-2); }
.mem-text .mt-from { color: var(--fg); font-weight: 600; }
.mem-text .mt-arrow { color: var(--gold-rich); margin: 0 10px; }
.mem-quote { text-align: center; margin: 56px auto 0; max-width: 880px; font-family: "Noto Sans SC", var(--font-sans); font-size: clamp(24px, 3.2vw, 40px); font-weight: 700; line-height: 1.35; color: var(--gold-bright); text-wrap: balance; }
.mem-quote .dim { color: var(--fg); font-weight: 600; }

/* ============================================================
   CTA TRIO — §6
   ============================================================ */
.cta-trio { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }

/* ============================================================
   §1 PRODUCT DEFINITION — 3 core rows
   ============================================================ */
.def-rows { max-width: 920px; margin: 0 auto; display: flex; flex-direction: column; gap: 16px; }
.def-row {
  display: grid; grid-template-columns: 60px 1fr; gap: 26px; align-items: center;
  padding: 28px 32px; border-radius: 16px; background: var(--bg-card); border: 1px solid var(--rule);
  transition: border-color 200ms ease, transform 200ms ease;
}
.def-row:hover { border-color: var(--rule-2); transform: translateX(4px); }
.def-ic { width: 52px; height: 52px; border-radius: 13px; display: grid; place-items: center; background: rgba(196,154,60,0.10); border: 1px solid rgba(196,154,60,0.24); color: var(--bronze); }
.def-ic svg { width: 26px; height: 26px; }
.def-text { font-family: "Noto Sans SC", var(--font-sans); font-size: clamp(15px, 1.4vw, 18px); line-height: 1.62; color: var(--fg-2); }
.def-text strong { color: var(--gold-bright); font-weight: 600; }
.def-text .jade { color: var(--jade-soft); font-weight: 600; }

/* ============================================================
   §2 POINTS LOOP — the product's core mechanic
   ============================================================ */
.loop {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 0;
  position: relative; margin-top: 8px;
}
.loop-step {
  position: relative; padding: 30px 24px; border-radius: 16px;
  background: var(--bg-card); border: 1px solid var(--rule);
  margin: 0 8px; display: flex; flex-direction: column; gap: 14px;
  transition: border-color 200ms ease, transform 200ms ease;
}
.loop-step:hover { border-color: rgba(0,212,170,0.40); transform: translateY(-4px); }
.loop-step::after {
  content: ""; position: absolute; top: 50%; right: -20px; width: 24px; height: 24px;
  transform: translateY(-50%); z-index: 3;
  background: no-repeat center / contain
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2300d4aa' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'><path d='M5 12h14M13 6l6 6-6 6'/></svg>");
}
.loop-step:last-child::after {
  /* wrap arrow back */
  content: "↺"; right: -22px; color: var(--jade); font-size: 22px; display: grid; place-items: center;
  background: none;
}
.loop-num { font-family: var(--font-mono); font-size: 13px; font-weight: 700; color: var(--jade); letter-spacing: 0.06em; }
.loop-ic { width: 40px; height: 40px; border-radius: 10px; display: grid; place-items: center; background: rgba(0,212,170,0.10); border: 1px solid rgba(0,212,170,0.22); color: var(--jade-soft); }
.loop-ic svg { width: 21px; height: 21px; }
.loop-title { font-family: "Noto Sans SC", var(--font-sans); font-size: 18px; font-weight: 600; color: var(--fg); }
.loop-desc { font-family: "Noto Sans SC", var(--font-sans); font-size: 13px; line-height: 1.6; color: var(--fg-muted); }
.loop-gain { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.04em; color: var(--jade-soft); padding-top: 12px; border-top: 1px dashed var(--rule); }
.loop-caption { text-align: center; margin: 56px auto 0; max-width: 820px; font-family: "Noto Sans SC", var(--font-sans); font-size: clamp(20px, 2.4vw, 32px); font-weight: 700; line-height: 1.4; color: var(--gold-bright); text-wrap: balance; }
.loop-caption .dim { color: var(--fg); font-weight: 600; }

/* ============================================================
   §3 WHAT 震魂 DID — 4 capability cards
   ============================================================ */
.cap4-lead { text-align: center; max-width: 820px; margin: 0 auto 56px; font-family: "Noto Sans SC", var(--font-sans); font-size: clamp(24px, 3.2vw, 40px); font-weight: 600; line-height: 1.4; letter-spacing: -0.01em; color: var(--fg); text-wrap: balance; }
.cap4-lead em { font-style: normal; color: var(--gold-bright); }
.cap4-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.cap4-card { padding: 32px; border-radius: 18px; background: var(--bg-card); border: 1px solid var(--rule); display: flex; flex-direction: column; gap: 16px; transition: border-color 200ms ease, transform 200ms ease; }
.cap4-card:hover { border-color: var(--rule-2); transform: translateY(-3px); }
.cap4-ic { width: 48px; height: 48px; border-radius: 12px; display: grid; place-items: center; background: rgba(241,205,106,0.08); border: 1px solid rgba(241,205,106,0.18); color: var(--gold-bright); }
.cap4-ic svg { width: 24px; height: 24px; }
.cap4-card.jade .cap4-ic { background: rgba(0,212,170,0.08); border-color: rgba(0,212,170,0.20); color: var(--jade-soft); }
.cap4-title { font-family: "Noto Sans SC", var(--font-sans); font-size: 20px; font-weight: 600; color: var(--fg); }
.cap4-desc { font-family: "Noto Sans SC", var(--font-sans); font-size: 14.5px; line-height: 1.65; color: var(--fg-muted); margin: 0; }
.cap4-desc strong { color: var(--gold-pale); font-weight: 600; }
.cap4-card.jade .cap4-desc strong { color: var(--jade-soft); }

/* ============================================================
   §4 TRUST CARDS — 3 Hubei footprints
   ============================================================ */
.trust-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.trust-card { padding: 32px 30px; border-radius: 18px; background: linear-gradient(180deg, rgba(196,154,60,0.07), rgba(196,154,60,0.015)); border: 1px solid rgba(196,154,60,0.22); display: flex; flex-direction: column; gap: 16px; transition: border-color 200ms ease, transform 200ms ease; }
.trust-card:hover { border-color: rgba(196,154,60,0.45); transform: translateY(-3px); }
.trust-ic { width: 44px; height: 44px; border-radius: 11px; display: grid; place-items: center; background: rgba(196,154,60,0.12); border: 1px solid rgba(196,154,60,0.26); color: var(--bronze); }
.trust-ic svg { width: 22px; height: 22px; }
.trust-name { font-family: "Noto Sans SC", var(--font-sans); font-size: 21px; font-weight: 600; color: var(--fg); }
.trust-kind { font-family: "Noto Sans SC", var(--font-sans); font-size: 13.5px; color: var(--bronze); }
.trust-sig { margin-top: auto; padding-top: 18px; border-top: 1px solid rgba(196,154,60,0.18); font-family: "Noto Sans SC", var(--font-sans); font-size: 13.5px; color: var(--fg-2); }
.trust-caption { text-align: center; margin: 44px auto 0; max-width: 820px; font-family: "Noto Sans SC", var(--font-sans); font-size: clamp(18px, 2vw, 26px); font-weight: 500; color: var(--fg); text-wrap: balance; }
.trust-caption em { font-style: normal; color: var(--gold-bright); }

/* ============================================================
   §5 VALUE — 5 rows
   ============================================================ */
.gov5 { max-width: 900px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.gov5-row { display: grid; grid-template-columns: 46px 200px 1fr; gap: 22px; align-items: center; padding: 22px 28px; border-radius: 14px; background: var(--bg-card); border: 1px solid var(--rule); transition: border-color 200ms ease, transform 200ms ease; }
.gov5-row:hover { border-color: var(--rule-2); transform: translateX(4px); }
.gov5-ic { width: 40px; height: 40px; border-radius: 10px; display: grid; place-items: center; background: rgba(241,205,106,0.08); border: 1px solid rgba(241,205,106,0.18); color: var(--gold-bright); }
.gov5-ic svg { width: 21px; height: 21px; }
.gov5-key { font-family: "Noto Sans SC", var(--font-sans); font-size: 16px; font-weight: 600; color: var(--fg); }
.gov5-val { font-family: "Noto Sans SC", var(--font-sans); font-size: 14px; line-height: 1.6; color: var(--fg-muted); }

/* ============================================================
   §6 CTA quad (reuse .cta-quad from 吉庆街? define here)
   ============================================================ */
.cta-quad { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.cta-card--demo .cta-ic { background: rgba(0,212,170,0.10); border-color: rgba(0,212,170,0.24); color: var(--jade-soft); }
.cta-closing { text-align: center; margin: 56px auto 0; font-family: "Noto Sans SC", var(--font-sans); font-size: clamp(24px, 3.4vw, 44px); font-weight: 700; line-height: 1.32; color: var(--gold-bright); text-wrap: balance; }
.cta-closing .dim { color: var(--fg); }

/* hero stage chip — jade */
.chip--stage { border-color: rgba(0,212,170,0.36); background: rgba(0,212,170,0.08); color: var(--jade-soft); }
.chip--stage svg { color: var(--jade-soft); }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 900px) {
  .nav { padding: 16px 20px; }
  .nav-links, .nav-search { display: none; }
  .wrap { padding: 0 20px; }
  .section { padding: 72px 0; }
  .ov-grid, .win-grid, .cap-grid, .stat-strip, .stat-strip--3, .ba, .geo-compare, .cta-grid { grid-template-columns: 1fr; }
  .def-row { grid-template-columns: 52px 1fr; gap: 18px; }
  .loop { grid-template-columns: 1fr; gap: 14px; }
  .loop-step { margin: 0; }
  .loop-step::after { top: auto; bottom: -19px; right: 50%; transform: translateX(50%) rotate(90deg); }
  .loop-step:last-child::after { display: none; }
  .cap4-grid, .trust-grid, .cta-quad { grid-template-columns: 1fr; }
  .gov5-row { grid-template-columns: 40px 1fr; }
  .gov5-val { grid-column: 1 / -1; }
  .qcompare, .chat-grid, .cta-trio { grid-template-columns: 1fr; }
  .bigba { grid-template-columns: 1fr; gap: 14px; }
  .bigba-mid { width: 100%; height: 48px; transform: rotate(90deg); }
  .cap-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-strip { grid-template-columns: repeat(2, 1fr); gap: 32px 16px; }
  .layer { grid-template-columns: 64px 1fr; }
  .layer-feat { justify-content: flex-start; max-width: none; grid-column: 1 / -1; }
  .role-tier { flex-wrap: wrap; }
  .role-tier--fire { transform: none; }
  .hero-scroll { display: none; }
}
@media (max-width: 560px) {
  .cap-grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1 !important; transform: none !important; transition: none !important; }
}