/* =========================================================
   思维灵动科技 · 官网样式
   ========================================================= */

@font-face {
  font-family: "Unbounded";
  src: url("../fonts/unbounded-latin.22f9b928aa.woff2") format("woff2");
  font-weight: 300 700;
  font-display: swap;
}
@font-face {
  font-family: "LD Serif";
  src: url("../fonts/serif-sc.fd5576b184.woff2") format("woff2");
  font-weight: 600;
  font-display: swap;
}

:root {
  --bg: #07080b;
  --bg-2: #0c0e12;
  --bg-3: #12151b;
  --line: rgba(255, 255, 255, 0.08);
  --line-2: rgba(255, 255, 255, 0.14);
  --text: #eef0ea;
  --text-2: #b9bdb6;
  --muted: #80858d;
  --accent: #c8f542;
  --accent-2: #5ee6c3;
  --accent-soft: rgba(200, 245, 66, 0.12);
  --warn: #ffb547;
  --danger: #ff6b5b;

  --grad: linear-gradient(100deg, #f3ffd9 0%, #c8f542 42%, #5ee6c3 100%);

  --f-en: "Unbounded", "PingFang SC", "Microsoft YaHei", sans-serif;
  --f-serif: "LD Serif", "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", serif;
  --f-body: -apple-system, BlinkMacSystemFont, "PingFang SC", "HarmonyOS Sans SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;

  --wrap: 1280px;
  --gutter: clamp(20px, 4vw, 56px);
  --radius: 18px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --nav-h: 76px;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--f-body);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
.is-loading body { overflow: hidden; }
html:not(.js) .loader { display: none; }
img, svg, canvas { display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, p, ol, ul { margin: 0; padding: 0; }
ol, ul { list-style: none; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
::selection { background: var(--accent); color: #0b0d06; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gutter); }

.grad {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---------- 品牌标识 ---------- */
.mark { width: 32px; height: 32px; flex: none; }
.mark__ring { stroke: currentColor; stroke-opacity: 0.32; stroke-width: 1.6; }
.mark__wave { stroke: currentColor; stroke-width: 2; stroke-linecap: round; }
.mark__dot { fill: var(--accent); }

.brand { display: inline-flex; align-items: center; gap: 12px; }
.brand__text { display: flex; flex-direction: column; line-height: 1.1; }
.brand__text b { font-family: var(--f-serif); font-weight: 600; font-size: 18px; letter-spacing: 0.12em; }
.brand__text small { font-family: var(--f-en); font-size: 8.5px; letter-spacing: 0.32em; color: var(--muted); margin-top: 4px; }
.brand:hover .mark__dot { animation: dotHop 0.6s var(--ease); }
@keyframes dotHop { 50% { transform: translate(-1px, -3px); } }

/* ---------- 按钮 ---------- */
.btn {
  position: relative;
  display: inline-flex; align-items: center; gap: 10px;
  height: 52px; padding: 0 26px;
  border-radius: 999px;
  font-size: 15px; font-weight: 500; letter-spacing: 0.04em;
  white-space: nowrap;
  overflow: hidden;
  transition: color 0.4s var(--ease), border-color 0.4s var(--ease), background-color 0.4s var(--ease);
  will-change: transform;
}
.btn > * { position: relative; z-index: 1; }
.btn .arrow { font-style: normal; display: inline-block; transition: transform 0.4s var(--ease); }
.btn:hover .arrow { transform: translateX(4px); }
.btn--solid { background: var(--accent); color: #0b0d06; }
.btn--solid::before {
  content: ""; position: absolute; inset: 0; z-index: 0;
  background: #fff;
  transform: translateY(101%);
  transition: transform 0.5s var(--ease);
  border-radius: inherit;
}
.btn--solid:hover::before { transform: none; }
.btn--line { border: 1px solid var(--line-2); height: 44px; padding: 0 20px; font-size: 14px; }
.btn--line:hover { border-color: var(--accent); color: var(--accent); }
.btn--text { padding: 0 6px; color: var(--text-2); }
.btn--text span { background: linear-gradient(currentColor, currentColor) 0 100% / 0 1px no-repeat; transition: background-size 0.5s var(--ease); padding-bottom: 2px; }
.btn--text:hover { color: var(--text); }
.btn--text:hover span { background-size: 100% 1px; }
.btn--lg { height: 64px; padding: 0 36px; font-size: 17px; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 13px; letter-spacing: 0.18em; color: var(--text-2);
  text-transform: uppercase;
}
.pulse { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 0 rgba(200, 245, 66, 0.6); animation: pulse 2.2s infinite; }
@keyframes pulse { 70% { box-shadow: 0 0 0 10px rgba(200, 245, 66, 0); } 100% { box-shadow: 0 0 0 0 rgba(200, 245, 66, 0); } }

/* ---------- 加载动画 ---------- */
.loader {
  position: fixed; inset: 0; z-index: 100;
  background: var(--bg);
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 28px;
  transition: clip-path 1s var(--ease);
  clip-path: inset(0 0 0 0);
}
.loader.is-done { clip-path: inset(0 0 100% 0); pointer-events: none; }
.loader__inner { display: flex; align-items: center; gap: 22px; }
.loader__mark { width: 54px; height: 54px; color: var(--text); }
.loader__mark .mark__wave { stroke-dasharray: 40; stroke-dashoffset: 40; animation: draw 1.2s var(--ease) forwards 0.1s; }
@keyframes draw { to { stroke-dashoffset: 0; } }
.loader__num { font-family: var(--f-en); font-size: 64px; font-weight: 300; line-height: 1; letter-spacing: -0.02em; font-variant-numeric: tabular-nums; min-width: 3.2ch; }
.loader__num small { font-size: 0.4em; color: var(--accent); margin-left: 4px; }
.loader__bar { width: min(280px, 60vw); height: 1px; background: var(--line); overflow: hidden; }
.loader__bar i { display: block; height: 100%; width: 100%; background: var(--grad); transform-origin: left; transform: scaleX(0); }
.loader__tip { font-family: var(--f-serif); letter-spacing: 0.4em; font-size: 14px; color: var(--muted); }

/* ---------- 光标跟随 ---------- */
.cursor { display: none; }
@media (hover: hover) and (pointer: fine) {
  .cursor {
    display: block;
    position: fixed; left: 0; top: 0; z-index: 90;
    width: 36px; height: 36px; margin: -18px 0 0 -18px;
    border: 1px solid rgba(200, 245, 66, 0.55);
    border-radius: 50%;
    pointer-events: none;
    transition: width 0.35s var(--ease), height 0.35s var(--ease), margin 0.35s var(--ease), background-color 0.35s var(--ease), border-color 0.35s, opacity 0.3s;
    opacity: 0;
  }
  .cursor.is-on { opacity: 1; }
  .cursor.is-hover { width: 64px; height: 64px; margin: -32px 0 0 -32px; background: rgba(200, 245, 66, 0.08); border-color: rgba(200, 245, 66, 0.25); }
}

/* ---------- 导航 ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  height: var(--nav-h);
  transition: top 0.5s var(--ease), background-color 0.4s, border-color 0.4s, backdrop-filter 0.4s;
  border-bottom: 1px solid transparent;
}
/* 注意：导航不使用 transform，避免移动端全屏菜单（fixed）以导航为定位基准 */
.nav.is-scrolled {
  background: rgba(7, 8, 11, 0.72);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  backdrop-filter: blur(16px) saturate(140%);
  border-color: var(--line);
}
.nav.is-hidden { top: calc(-1 * var(--nav-h) - 2px); }
.nav__inner { height: 100%; max-width: calc(var(--wrap) + 160px); margin: 0 auto; padding: 0 var(--gutter); display: flex; align-items: center; gap: 24px; }
.nav__links { margin-left: auto; display: flex; gap: 4px; }
.nav__links a {
  position: relative; height: 44px; padding: 0 16px;
  display: flex; align-items: center;
  font-size: 15px; color: var(--text-2);
  overflow: hidden;
}
.nav__links a span, .nav__links a em { display: block; transition: transform 0.5s var(--ease); }
.nav__links a em {
  position: absolute; left: 16px; top: 100%;
  font-style: normal; font-family: var(--f-en); font-size: 12px; letter-spacing: 0.06em; color: var(--accent);
  line-height: 44px;
}
.nav__links a:hover span { transform: translateY(-140%); }
.nav__links a:hover em { transform: translateY(-100%); }
.nav__links a.is-active { color: var(--text); }
.nav__links a.is-active::after { content: ""; position: absolute; left: 16px; bottom: 8px; width: 4px; height: 4px; border-radius: 50%; background: var(--accent); }
.nav__cta-m { display: none !important; }
.nav__toggle { display: none; width: 44px; height: 44px; position: relative; margin-left: auto; }
.nav__toggle i { position: absolute; left: 11px; right: 11px; height: 1.5px; background: var(--text); transition: transform 0.4s var(--ease), top 0.4s var(--ease); }
.nav__toggle i:first-child { top: 17px; }
.nav__toggle i:last-child { top: 26px; }
.nav.is-open .nav__toggle i:first-child { top: 21px; transform: rotate(45deg); }
.nav.is-open .nav__toggle i:last-child { top: 21px; transform: rotate(-45deg); }

/* ---------- 首屏 ---------- */
.hero {
  position: relative;
  min-height: 100vh; min-height: 100svh;
  display: flex; flex-direction: column; justify-content: center;
  padding: calc(var(--nav-h) + 40px) 0 140px;
  overflow: hidden;
  isolation: isolate;
}
.hero__canvas { position: absolute; inset: 0; width: 100%; height: 100%; z-index: -2; }
.hero__shade {
  position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(55% 65% at 20% 55%, rgba(7, 8, 11, 0.8) 0%, rgba(7, 8, 11, 0.3) 55%, transparent 100%),
    linear-gradient(to bottom, rgba(7, 8, 11, 0.6) 0%, transparent 18%, transparent 70%, var(--bg) 100%);
}
.hero__inner { position: relative; }
.hero__eyebrow { margin-bottom: clamp(24px, 3vw, 40px); }
.hero__title {
  font-family: var(--f-serif); font-weight: 600;
  font-size: clamp(64px, 12.5vw, 188px);
  line-height: 1.04;
  letter-spacing: 0.04em;
}
.hero__title .line { display: block; overflow: hidden; padding-bottom: 0.06em; }
.hero__title .line > span { display: inline-block; }
.hero__title .line:nth-child(2) { padding-left: 0.9em; }
.hero__foot { margin-top: clamp(32px, 4vw, 56px); display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 28px 48px; }
.hero__sub { color: var(--text-2); font-size: clamp(15px, 1.25vw, 18px); max-width: 34em; }
.hero__actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 20px; }
.hero__en {
  position: absolute; left: 50%; bottom: -0.18em; transform: translateX(-50%);
  font-family: var(--f-en); font-weight: 600;
  font-size: clamp(56px, 11.5vw, 220px);
  line-height: 1; letter-spacing: -0.04em;
  white-space: nowrap;
  color: transparent;
  -webkit-text-stroke: 1px rgba(238, 240, 234, 0.13);
  pointer-events: none; z-index: -1;
}
.scroll-tip {
  position: absolute; right: var(--gutter); bottom: 48px;
  display: flex; flex-direction: column; align-items: center; gap: 12px;
  font-family: var(--f-en); font-size: 10px; letter-spacing: 0.3em; color: var(--muted);
  writing-mode: vertical-rl;
}
.scroll-tip i { width: 1px; height: 56px; background: var(--line-2); position: relative; overflow: hidden; }
.scroll-tip i::after { content: ""; position: absolute; left: 0; top: -40%; width: 100%; height: 40%; background: var(--accent); animation: drip 2s var(--ease) infinite; }
@keyframes drip { to { top: 100%; } }

/* 首屏入场 */
.js .hero__title .line > span { transform: translateY(110%); }
.js .hero__eyebrow, .js .hero__foot, .js .scroll-tip { opacity: 0; transform: translateY(20px); }
.js .hero__en { opacity: 0; }
.is-ready .hero__title .line > span { transform: none; transition: transform 1.3s var(--ease); }
.is-ready .hero__title .line:nth-child(2) > span { transition-delay: 0.12s; }
.is-ready .hero__eyebrow, .is-ready .hero__foot, .is-ready .scroll-tip { opacity: 1; transform: none; transition: opacity 1s var(--ease) 0.5s, transform 1s var(--ease) 0.5s; }
.is-ready .hero__foot { transition-delay: 0.65s; }
.is-ready .hero__en { opacity: 1; transition: opacity 2s ease 0.6s; }

/* ---------- 跑马灯 ---------- */
.marquee { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); overflow: hidden; padding: 22px 0; background: var(--bg); }
.marquee__track { display: flex; width: max-content; align-items: center; gap: 36px; animation: marquee 38s linear infinite; }
.marquee:hover .marquee__track { animation-play-state: paused; }
.marquee span { font-family: var(--f-serif); font-weight: 600; font-size: clamp(20px, 2.2vw, 30px); letter-spacing: 0.08em; white-space: nowrap; color: var(--text-2); }
.marquee b { color: var(--accent); font-size: 16px; font-weight: 400; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- 通用 Section ---------- */
.section { position: relative; padding: clamp(96px, 13vw, 180px) 0; }
.sec-head { display: flex; align-items: center; gap: 16px; margin-bottom: clamp(32px, 4vw, 56px); }
.sec-no { font-family: var(--f-en); font-size: 13px; color: var(--accent); padding: 4px 10px; border: 1px solid rgba(200, 245, 66, 0.35); border-radius: 999px; line-height: 1.2; }
.sec-label { font-size: 14px; letter-spacing: 0.16em; color: var(--text-2); }
.sec-label em { font-style: normal; font-family: var(--f-en); font-size: 11px; letter-spacing: 0.1em; color: var(--muted); margin-left: 10px; }
.sec-title {
  font-family: var(--f-serif); font-weight: 600;
  font-size: clamp(38px, 5.4vw, 80px);
  line-height: 1.18; letter-spacing: 0.03em;
}

/* 滚动渐显 */
.js .reveal { opacity: 0; transform: translateY(36px); transition: opacity 1s var(--ease), transform 1.1s var(--ease); transition-delay: var(--d, 0s); }
.js .reveal.is-in { opacity: 1; transform: none; }

/* 光斑卡片 */
.spot { position: relative; isolation: isolate; }
.spot::before {
  content: ""; position: absolute; inset: 0; z-index: -1; border-radius: inherit; pointer-events: none;
  background: radial-gradient(420px circle at var(--mx, 50%) var(--my, -30%), rgba(200, 245, 66, 0.11), transparent 45%);
  opacity: 0; transition: opacity 0.5s;
}
.spot:hover::before { opacity: 1; }

/* ---------- 01 关于 ---------- */
.statement {
  font-family: var(--f-serif); font-weight: 600;
  font-size: clamp(28px, 4vw, 58px);
  line-height: 1.5; letter-spacing: 0.04em;
  max-width: 21em;
}
.statement em { font-style: normal; }
.statement .ch { color: rgba(238, 240, 234, 0.16); transition: color 0.35s; }
.statement .ch.is-lit { color: var(--text); }
.statement em .ch.is-lit { color: var(--accent); }
.about__grid { margin-top: clamp(56px, 7vw, 110px); display: grid; grid-template-columns: 1fr 1.25fr; gap: 48px 80px; align-items: start; }
.about__text p { color: var(--text-2); font-size: 16px; }
.about__text p + p { margin-top: 1em; }
.stats { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); }
.stats li { padding: 28px 20px 0 0; }
.stats li + li { padding-left: 24px; border-left: 1px solid var(--line); }
.stats__num { display: flex; align-items: baseline; gap: 6px; }
.stats__num b { font-family: var(--f-en); font-weight: 400; font-size: clamp(40px, 4.4vw, 64px); line-height: 1; letter-spacing: -0.03em; font-variant-numeric: tabular-nums; }
.stats__num span { font-family: var(--f-en); font-size: 14px; color: var(--accent); }
.stats p { margin-top: 14px; font-size: 14px; color: var(--muted); line-height: 1.7; }

/* ---------- 02 服务 ---------- */
.services { background: linear-gradient(to bottom, var(--bg), var(--bg-2) 30%, var(--bg-2) 70%, var(--bg)); }
.svc-grid { margin-top: clamp(48px, 6vw, 88px); display: grid; grid-template-columns: repeat(2, 1fr); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: var(--bg-2); }
.svc:nth-child(odd) { border-right: 1px solid var(--line); }
.svc:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
.svc { background: var(--bg-2); padding: clamp(28px, 3.4vw, 48px); min-height: 380px; display: flex; flex-direction: column; transition: background-color 0.5s; }
.svc:hover { background: #0f1216; }
.svc__top { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: auto; padding-bottom: 48px; }
.svc__no { font-family: var(--f-en); font-size: 12px; color: var(--muted); letter-spacing: 0.08em; }
.svc__icon { width: 52px; height: 52px; stroke: var(--text-2); stroke-width: 1.4; stroke-linecap: round; stroke-linejoin: round; transition: transform 0.6s var(--ease), stroke 0.4s; }
.svc__icon .hl { stroke: var(--accent); stroke-width: 2; }
.svc:hover .svc__icon { transform: rotate(-8deg) scale(1.08); stroke: var(--text); }
.svc h3 { font-family: var(--f-serif); font-weight: 600; font-size: clamp(26px, 2.4vw, 34px); letter-spacing: 0.05em; line-height: 1.3; }
.svc__en { font-family: var(--f-en); font-size: 12px; color: var(--accent); margin-top: 6px; letter-spacing: 0.04em; }
.svc__desc { margin-top: 18px; color: var(--text-2); font-size: 15px; max-width: 28em; }
.tags { margin-top: 24px; display: flex; flex-wrap: wrap; gap: 8px; }
.tags li { font-size: 12.5px; color: var(--text-2); padding: 4px 12px; border: 1px solid var(--line-2); border-radius: 999px; transition: border-color 0.3s, color 0.3s; }
.svc:hover .tags li { border-color: rgba(200, 245, 66, 0.3); }

/* ---------- 03 优势 ---------- */
.why__grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 64px 96px; }
.why__aside { position: sticky; top: calc(var(--nav-h) + 48px); align-self: start; }
.why__quote { margin-top: 32px; padding-left: 18px; border-left: 2px solid var(--accent); color: var(--text-2); font-family: var(--f-serif); font-weight: 600; letter-spacing: 0.1em; }
.why__list { counter-reset: w; }
.why__item {
  display: grid; grid-template-columns: 92px 1fr; gap: 24px;
  padding: 40px 0; border-top: 1px solid var(--line);
  transition: padding 0.5s var(--ease);
}
.why__item:last-child { border-bottom: 1px solid var(--line); }
.why__no { font-family: var(--f-en); font-weight: 300; font-size: 44px; line-height: 1; color: transparent; -webkit-text-stroke: 1px rgba(238, 240, 234, 0.35); transition: color 0.5s, -webkit-text-stroke-color 0.5s; }
.why__item h3 { font-family: var(--f-serif); font-weight: 600; font-size: clamp(24px, 2.2vw, 30px); letter-spacing: 0.05em; line-height: 1.3; transition: color 0.4s; }
.why__item p { margin-top: 12px; color: var(--text-2); font-size: 15px; }
.why__item:hover { padding-left: 12px; }
.why__item:hover .why__no { color: var(--accent); -webkit-text-stroke-color: var(--accent); }
.why__item:hover h3 { color: var(--accent); }

/* ---------- 04 能力演示 ---------- */
.showcase__head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: flex-end; gap: 24px 64px; }
.showcase__note { max-width: 26em; color: var(--muted); font-size: 14px; }
.demo-grid { margin-top: clamp(48px, 6vw, 80px); display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.demo { border: 1px solid var(--line); border-radius: var(--radius); background: var(--bg-2); overflow: hidden; transition: border-color 0.5s, transform 0.6s var(--ease); }
.demo:hover { border-color: var(--line-2); }
.demo__view {
  position: relative; aspect-ratio: 16 / 10.5; padding: clamp(18px, 2.4vw, 32px);
  display: flex; align-items: center; justify-content: center;
  background:
    radial-gradient(80% 90% at 80% 0%, rgba(94, 230, 195, 0.09), transparent 60%),
    radial-gradient(70% 80% at 0% 100%, rgba(200, 245, 66, 0.07), transparent 60%),
    var(--bg-3);
  overflow: hidden;
}
.demo__view::after { content: ""; position: absolute; inset: 0; background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px); background-size: 28px 28px; mask-image: radial-gradient(circle at 50% 50%, #000 0%, transparent 75%); -webkit-mask-image: radial-gradient(circle at 50% 50%, #000 0%, transparent 75%); opacity: 0.5; pointer-events: none; }
.demo__meta { display: flex; justify-content: space-between; align-items: flex-start; gap: 20px; padding: 24px clamp(20px, 2.4vw, 32px) 28px; border-top: 1px solid var(--line); }
.demo__meta h3 { font-family: var(--f-serif); font-weight: 600; font-size: 22px; letter-spacing: 0.05em; }
.demo__meta p { margin-top: 6px; color: var(--muted); font-size: 14px; }
.demo__tag { flex: none; font-family: var(--f-en); font-size: 10.5px; letter-spacing: 0.06em; color: var(--accent); padding: 4px 10px; border: 1px solid rgba(200, 245, 66, 0.3); border-radius: 999px; }

/* 示意界面 */
.mock {
  position: relative; z-index: 1; width: 100%; max-width: 440px;
  background: rgba(18, 21, 27, 0.92);
  border: 1px solid var(--line-2); border-radius: 14px;
  box-shadow: 0 30px 60px -20px rgba(0, 0, 0, 0.7), 0 0 0 1px rgba(0, 0, 0, 0.3);
  font-size: 12px; line-height: 1.6; color: var(--text-2);
  transition: transform 0.8s var(--ease);
}
.demo:hover .mock { transform: translateY(-6px) scale(1.015); }
.mock__bar { display: flex; align-items: center; gap: 6px; padding: 10px 14px; border-bottom: 1px solid var(--line); }
.mock__bar i { width: 8px; height: 8px; border-radius: 50%; background: rgba(255, 255, 255, 0.14); }
.mock__bar span { margin-left: 8px; font-size: 11px; color: var(--muted); }

.chat { padding: 16px; display: flex; flex-direction: column; gap: 12px; }
.chat__q { align-self: flex-end; max-width: 80%; background: var(--accent); color: #0b0d06; padding: 8px 12px; border-radius: 12px 12px 2px 12px; font-weight: 500; }
.chat__a { max-width: 92%; background: rgba(255, 255, 255, 0.05); border: 1px solid var(--line); padding: 10px 12px; border-radius: 12px 12px 12px 2px; }
.chat__a b { color: var(--text); }
.chat__refs { margin-top: 8px; display: flex; flex-wrap: wrap; gap: 6px; }
.chat__refs span { font-size: 10.5px; color: var(--accent-2); background: rgba(94, 230, 195, 0.08); border: 1px solid rgba(94, 230, 195, 0.25); padding: 1px 8px; border-radius: 6px; }
.chat__input { display: flex; justify-content: space-between; align-items: center; border: 1px solid var(--line-2); border-radius: 10px; padding: 7px 8px 7px 12px; color: var(--muted); }
.chat__input i { font-style: normal; width: 22px; height: 22px; border-radius: 7px; background: rgba(255, 255, 255, 0.08); display: grid; place-items: center; color: var(--text); }

.mock--admin { display: grid; grid-template-columns: 44px 1fr; overflow: hidden; }
.adm__side { border-right: 1px solid var(--line); padding: 14px 0; display: flex; flex-direction: column; align-items: center; gap: 12px; }
.adm__side i { width: 18px; height: 18px; border-radius: 6px; background: rgba(255, 255, 255, 0.07); }
.adm__side i.on { background: var(--accent); }
.adm__main { padding: 14px; display: flex; flex-direction: column; gap: 12px; }
.adm__kpis { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.adm__kpis div { border: 1px solid var(--line); border-radius: 9px; padding: 8px 10px; background: rgba(255, 255, 255, 0.02); }
.adm__kpis small { display: block; font-size: 10px; color: var(--muted); }
.adm__kpis b { display: block; font-family: var(--f-en); font-weight: 500; font-size: 15px; color: var(--text); margin-top: 2px; }
.adm__kpis em { font-style: normal; font-size: 10px; color: var(--accent); }
.adm__kpis em.dn { color: var(--accent-2); }
.adm__chart { height: 96px; display: flex; align-items: flex-end; gap: 8px; padding: 10px; border: 1px solid var(--line); border-radius: 9px; }
.adm__chart i { flex: 1; height: var(--h); border-radius: 4px 4px 2px 2px; background: linear-gradient(to top, rgba(200, 245, 66, 0.15), rgba(200, 245, 66, 0.7)); transform-origin: bottom; transform: scaleY(0.15); transition: transform 1.1s var(--ease); }
.adm__chart i:last-child { background: linear-gradient(to top, rgba(94, 230, 195, 0.3), var(--accent-2)); }
.is-in .adm__chart i { transform: none; }
.adm__chart i:nth-child(2) { transition-delay: 0.05s; } .adm__chart i:nth-child(3) { transition-delay: 0.1s; } .adm__chart i:nth-child(4) { transition-delay: 0.15s; }
.adm__chart i:nth-child(5) { transition-delay: 0.2s; } .adm__chart i:nth-child(6) { transition-delay: 0.25s; } .adm__chart i:nth-child(7) { transition-delay: 0.3s; } .adm__chart i:nth-child(8) { transition-delay: 0.35s; }
.adm__rows { display: flex; flex-direction: column; gap: 6px; }
.adm__rows i { height: 10px; border-radius: 4px; background: rgba(255, 255, 255, 0.05); }
.adm__rows i:nth-child(2) { width: 82%; } .adm__rows i:nth-child(3) { width: 64%; }

.mock--screen { padding: 14px; background: linear-gradient(160deg, rgba(14, 22, 24, 0.95), rgba(10, 12, 16, 0.95)); }
.scr__head { display: flex; justify-content: space-between; align-items: center; padding-bottom: 10px; border-bottom: 1px solid var(--line); }
.scr__head span { color: var(--text); font-weight: 500; letter-spacing: 0.08em; }
.scr__head em { font-style: normal; font-size: 10px; color: var(--accent-2); display: inline-flex; align-items: center; gap: 6px; }
.scr__head em::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--accent-2); animation: pulse 2s infinite; }
.scr__body { display: grid; grid-template-columns: 1fr 96px; gap: 12px; align-items: center; padding: 14px 0; }
.scr__line { width: 100%; height: 100px; }
.scr__path { fill: none; stroke: var(--accent); stroke-width: 2; vector-effect: non-scaling-stroke; stroke-dasharray: 400; stroke-dashoffset: 400; transition: stroke-dashoffset 2s var(--ease); }
.is-in .scr__path { stroke-dashoffset: 0; }
.scr__ring { position: relative; width: 96px; height: 96px; }
.scr__ring svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.scr__ring circle { fill: none; stroke: rgba(255, 255, 255, 0.08); stroke-width: 3; }
.scr__ring circle.v { stroke: var(--accent-2); stroke-linecap: round; stroke-dasharray: 94.25; stroke-dashoffset: 94.25; transition: stroke-dashoffset 1.6s var(--ease) 0.3s; }
.is-in .scr__ring circle.v { stroke-dashoffset: 20.7; }
.scr__ring b { position: absolute; inset: 0; display: grid; place-items: center; font-family: var(--f-en); font-weight: 500; font-size: 20px; color: var(--text); }
.scr__ring b small { font-size: 10px; color: var(--muted); }
.scr__foot { display: flex; gap: 14px; flex-wrap: wrap; padding-top: 10px; border-top: 1px solid var(--line); font-size: 11px; }
.scr__foot span { display: inline-flex; align-items: center; gap: 6px; }
.scr__foot i { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }
.scr__foot i.w { background: var(--warn); }
.scr__foot i.e { background: var(--danger); }

.mock--doc { display: grid; grid-template-columns: 1fr 24px 1fr; gap: 10px; align-items: center; padding: 16px; background: transparent; border: 0; box-shadow: none; }
.doc__paper { background: #f1f2ec; color: #22252a; border-radius: 8px; padding: 14px; display: flex; flex-direction: column; gap: 7px; box-shadow: 0 24px 48px -16px rgba(0, 0, 0, 0.7); transform: rotate(-2deg); }
.doc__paper b { font-size: 13px; text-align: center; letter-spacing: 0.2em; margin-bottom: 4px; }
.doc__paper i { height: 5px; border-radius: 3px; background: #d5d7cf; }
.doc__paper i.s { width: 70%; }
.doc__paper p { font-size: 10.5px; }
.doc__paper mark { background: rgba(200, 245, 66, 0.7); color: #1b1f10; padding: 0 3px; border-radius: 3px; }
.doc__arrow { color: var(--accent); font-size: 18px; text-align: center; animation: nudge 1.6s ease-in-out infinite; }
@keyframes nudge { 50% { transform: translateX(4px); } }
.doc__fields { display: flex; flex-direction: column; gap: 7px; }
.doc__fields div { background: rgba(18, 21, 27, 0.95); border: 1px solid var(--line-2); border-radius: 8px; padding: 6px 10px; }
.doc__fields small { display: block; font-size: 10px; color: var(--muted); }
.doc__fields b { font-family: var(--f-en); font-weight: 500; font-size: 12px; color: var(--text); }
.doc__fields b.warn { font-family: var(--f-body); color: var(--warn); }
.doc__fields .ok { color: var(--accent); border-color: rgba(200, 245, 66, 0.3); background: rgba(200, 245, 66, 0.06); font-size: 11px; }

/* ---------- 05 流程 ---------- */
.steps { position: relative; margin-top: clamp(56px, 7vw, 96px); }
.steps__line { position: absolute; left: 0; right: 0; top: 7px; height: 1px; background: var(--line-2); }
.steps__line i { display: block; height: 100%; background: var(--grad); transform-origin: left; transform: scaleX(var(--p, 0)); }
.steps ol { display: grid; grid-template-columns: repeat(6, 1fr); gap: 24px; }
.step { position: relative; padding-top: 44px; }
.step__dot { position: absolute; left: 0; top: 0; width: 15px; height: 15px; border-radius: 50%; background: var(--bg); border: 1px solid var(--line-2); transition: border-color 0.4s, background-color 0.4s, box-shadow 0.4s; }
.step.is-on .step__dot { border-color: var(--accent); background: var(--accent); box-shadow: 0 0 0 6px rgba(200, 245, 66, 0.12); }
.step__no { font-family: var(--f-en); font-size: 12px; color: var(--muted); }
.step h3 { font-family: var(--f-serif); font-weight: 600; font-size: 22px; letter-spacing: 0.06em; margin-top: 8px; }
.step p { margin-top: 10px; font-size: 14px; color: var(--muted); line-height: 1.7; }

/* ---------- 06 联系 ---------- */
.cta { position: relative; padding: clamp(110px, 14vw, 200px) 0 clamp(150px, 16vw, 240px); text-align: center; overflow: hidden; isolation: isolate; border-top: 1px solid var(--line); }
.cta__orb {
  position: absolute; left: 50%; top: 48%; z-index: -1;
  width: min(900px, 120vw); aspect-ratio: 1; transform: translate(-50%, -50%);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(200, 245, 66, 0.12) 0%, rgba(94, 230, 195, 0.06) 35%, transparent 65%);
  pointer-events: none;
}
.cta__orb::before, .cta__orb::after {
  content: ""; position: absolute; inset: 14%; border-radius: 50%;
  border: 1px solid rgba(200, 245, 66, 0.16);
  animation: orbit 18s linear infinite;
  border-top-color: rgba(200, 245, 66, 0.55);
}
.cta__orb::after { inset: 24%; animation-duration: 26s; animation-direction: reverse; border-color: rgba(94, 230, 195, 0.12); border-bottom-color: rgba(94, 230, 195, 0.5); }
@keyframes orbit { to { transform: rotate(360deg); } }
.cta__inner { display: flex; flex-direction: column; align-items: center; }
.cta__title { margin-top: 24px; font-family: var(--f-serif); font-weight: 600; font-size: clamp(56px, 10vw, 150px); line-height: 1.12; letter-spacing: 0.05em; display: flex; flex-wrap: wrap; justify-content: center; column-gap: 0.25em; }
.cta__sub { margin-top: 28px; color: var(--text-2); font-size: clamp(15px, 1.2vw, 17px); }
.cta .btn--lg { margin-top: 44px; }
.contact-grid { width: 100%; margin-top: clamp(64px, 8vw, 110px); display: grid; grid-template-columns: 1fr 1fr 1.3fr; text-align: left; border-top: 1px solid var(--line); }
.contact-grid > div { padding: 28px 24px 0 0; }
.contact-grid > div + div { padding-left: 24px; border-left: 1px solid var(--line); }
.contact-grid small { display: block; font-size: 12px; color: var(--muted); letter-spacing: 0.08em; margin-bottom: 8px; }
.contact-grid a, .contact-grid p { font-size: 15px; color: var(--text); word-break: break-all; }
.contact-grid a:hover { color: var(--accent); }
.cta__en {
  position: absolute; left: 50%; bottom: -0.2em; transform: translateX(-50%);
  font-family: var(--f-en); font-weight: 600; font-size: clamp(30px, 6.2vw, 120px);
  letter-spacing: -0.04em; white-space: nowrap; line-height: 1;
  color: transparent; -webkit-text-stroke: 1px rgba(238, 240, 234, 0.1);
  pointer-events: none; z-index: -1;
}

/* ---------- 页脚 ---------- */
.footer { border-top: 1px solid var(--line); padding: 48px 0 32px; }
.footer__inner { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 24px; }
.footer__nav { display: flex; flex-wrap: wrap; gap: 8px 28px; font-size: 14px; color: var(--text-2); }
.footer__nav a:hover { color: var(--accent); }
.footer__bottom { margin-top: 36px; padding-top: 24px; border-top: 1px solid var(--line); display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 24px; font-size: 13px; color: var(--muted); }
.footer__bottom a:hover { color: var(--text); }

/* =========================================================
   响应式
   ========================================================= */
@media (max-width: 1080px) {
  .about__grid, .why__grid { grid-template-columns: 1fr; }
  .why__aside { position: static; }
  .steps ol { grid-template-columns: repeat(3, 1fr); row-gap: 48px; }
  .steps__line { display: none; }
}

@media (max-width: 900px) {
  :root { --nav-h: 64px; }
  .nav__cta { display: none; }
  .nav__toggle { display: block; }
  .nav__links {
    position: fixed; inset: 0; z-index: -1;
    flex-direction: column; justify-content: center; gap: 0;
    padding: var(--nav-h) var(--gutter) 40px;
    background: rgba(7, 8, 11, 0.97);
    -webkit-backdrop-filter: blur(20px); backdrop-filter: blur(20px);
    opacity: 0; visibility: hidden;
    transition: opacity 0.5s var(--ease), visibility 0.5s;
  }
  .nav.is-open .nav__links { opacity: 1; visibility: visible; }
  .nav.is-open { background: transparent; border-color: transparent; -webkit-backdrop-filter: none; backdrop-filter: none; }
  .nav__links a {
    height: auto; padding: 14px 0; border-bottom: 1px solid var(--line);
    justify-content: space-between;
    font-family: var(--f-serif); font-weight: 600; font-size: 30px; letter-spacing: 0.08em; color: var(--text);
    transform: translateY(20px); opacity: 0; transition: transform 0.6s var(--ease), opacity 0.6s var(--ease);
  }
  .nav.is-open .nav__links a { transform: none; opacity: 1; }
  .nav.is-open .nav__links a:nth-child(2) { transition-delay: 0.04s; } .nav.is-open .nav__links a:nth-child(3) { transition-delay: 0.08s; }
  .nav.is-open .nav__links a:nth-child(4) { transition-delay: 0.12s; } .nav.is-open .nav__links a:nth-child(5) { transition-delay: 0.16s; } .nav.is-open .nav__links a:nth-child(6) { transition-delay: 0.2s; }
  .nav__links a em { position: static; line-height: inherit; font-size: 11px; color: var(--muted); }
  .nav__links a:hover span, .nav__links a:hover em { transform: none; }
  .nav__links a.is-active::after { display: none; }
  .nav__cta-m { display: flex !important; }
  .nav__cta-m span { color: var(--accent); }

  .svc-grid, .demo-grid { grid-template-columns: 1fr; }
  .svc { min-height: 0; border-right: 0 !important; border-bottom: 0 !important; }
  .svc + .svc { border-top: 1px solid var(--line); }
  .svc__top { padding-bottom: 36px; }
  .stats { grid-template-columns: 1fr; border-top: 0; }
  .stats li, .stats li + li { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 20px 0; border-left: 0; border-top: 1px solid var(--line); }
  .stats p { margin-top: 0; text-align: right; }
  .hero__title .line:nth-child(2) { padding-left: 0.5em; }
  .scroll-tip { display: none; }
}

@media (max-width: 640px) {
  .hero { padding-bottom: 96px; }
  .hero__foot { flex-direction: column; align-items: flex-start; }
  .hero__sub br { display: none; }
  .hero__actions .btn--text { display: none; }
  .why__item { grid-template-columns: 56px 1fr; gap: 16px; padding: 28px 0; }
  .why__no { font-size: 30px; }
  .steps ol { grid-template-columns: 1fr 1fr; gap: 40px 20px; }
  .demo__meta { flex-direction: column; gap: 12px; }
  .mock { font-size: 11px; }
  .mock--doc { grid-template-columns: 1fr 16px 1fr; gap: 6px; padding: 0; }
  .scr__body { grid-template-columns: 1fr 72px; }
  .scr__ring { width: 72px; height: 72px; }
  .contact-grid { grid-template-columns: 1fr; }
  .contact-grid > div, .contact-grid > div + div { padding: 20px 0; border-left: 0; border-bottom: 1px solid var(--line); }
  .cta__sub br { display: none; }
  .btn--lg { height: 56px; padding: 0 28px; font-size: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
  html { scroll-behavior: auto; }
  .marquee__track { animation: none; }
}