/* ===========================================================
   律小助 AI · 官网样式表
   风格：黑金（近黑底 + 金色点缀），沉稳、权威、专业、精致
   作者：官网制作方    版本：v1.0
   =========================================================== */

/* ---------- 1. 设计变量 ---------- */
:root {
  --bg-deep: #07080a;
  --bg-base: #0b0c10;
  --bg-alt: #0f1116;
  --surface: #14161c;
  --surface-2: #191c23;
  --line: rgba(201, 164, 92, 0.16);
  --line-soft: rgba(255, 255, 255, 0.07);

  --gold: #c9a45c;
  --gold-bright: #e8c878;
  --gold-deep: #9c7b3a;
  --gold-glow: rgba(201, 164, 92, 0.28);

  --text: #ece9e2;
  --text-sub: #b6b2a8;
  --text-dim: #9a968c;

  --ok: #4fb286;
  --warn: #d9a343;

  --radius-s: 8px;
  --radius: 14px;
  --radius-l: 22px;

  --shadow-card: 0 18px 44px rgba(0, 0, 0, 0.45);
  --shadow-gold: 0 12px 34px rgba(201, 164, 92, 0.16);

  --font-serif: "Noto Serif SC", "Source Han Serif SC", "STSong", "SimSun", Georgia, serif;
  --font-sans: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;

  --maxw: 1200px;
  --nav-h: 72px;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- 2. 基础重置 ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg-base);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* 页面底层纹理：细微金色网格 + 顶部光晕，营造质感 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(900px 480px at 50% -12%, rgba(201, 164, 92, 0.10), transparent 62%),
    linear-gradient(to bottom, transparent, rgba(0, 0, 0, 0.35));
}

img { max-width: 100%; display: block; border: 0; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button, input, textarea { font: inherit; color: inherit; }
button { cursor: pointer; background: none; border: 0; }

::selection { background: rgba(201, 164, 92, 0.3); color: #fff; }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: #0b0c10; }
::-webkit-scrollbar-thumb {
  background: linear-gradient(var(--gold-deep), #6d5527);
  border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover { background: linear-gradient(var(--gold), var(--gold-deep)); }

/* ---------- 3. 布局容器 ---------- */
.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

.section { padding: 96px 0; position: relative; z-index: 1; }
.section--tight { padding: 68px 0; }
.section--alt { background: linear-gradient(180deg, #0d0e13 0%, #0a0b0f 100%); }
.section--deep { background: var(--bg-deep); }

/* ---------- 4. 通用排版 ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  letter-spacing: 0.22em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 18px;
}
.eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold));
}

.h1 {
  font-family: var(--font-serif);
  font-size: clamp(24px, 6.8vw, 62px);
  line-height: 1.24;
  letter-spacing: 0.01em;
  font-weight: 700;
}
.h2 {
  font-family: var(--font-serif);
  font-size: clamp(26px, 3.4vw, 40px);
  line-height: 1.32;
  font-weight: 700;
  letter-spacing: 0.01em;
}
.h3 { font-size: 19px; font-weight: 700; line-height: 1.5; }

.gold {
  background: linear-gradient(100deg, var(--gold-bright), var(--gold) 45%, var(--gold-deep));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.lead {
  font-size: 17px;
  color: var(--text-sub);
  line-height: 1.9;
}

.section-head { max-width: 780px; margin-bottom: 52px; }
.section-head--center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head--center .eyebrow { justify-content: center; }
.section-head .h2 { margin-bottom: 18px; }

.divider-gold {
  width: 62px; height: 3px; border-radius: 3px;
  background: linear-gradient(90deg, var(--gold), transparent);
  margin: 22px 0;
}
.section-head--center .divider-gold { margin: 22px auto; }

/* ---------- 5. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  height: 50px;
  padding: 0 28px;
  border-radius: var(--radius-s);
  font-size: 15.5px;
  font-weight: 700;
  letter-spacing: 0.02em;
  white-space: nowrap;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease),
              background 0.25s var(--ease), color 0.25s var(--ease);
}
.btn--gold {
  background: linear-gradient(120deg, var(--gold-bright), var(--gold) 55%, var(--gold-deep));
  color: #1a1408;
  box-shadow: var(--shadow-gold);
}
.btn--gold:hover { transform: translateY(-2px); box-shadow: 0 16px 40px rgba(201, 164, 92, 0.3); }
.btn--ghost {
  border: 1px solid rgba(201, 164, 92, 0.3);
  color: var(--gold-bright);
  background: rgba(201, 164, 92, 0.04);
}
.btn--ghost:hover {
  border-color: rgba(201, 164, 92, 0.55);
  background: rgba(201, 164, 92, 0.1);
  transform: translateY(-2px);
}
.btn--sm { height: 42px; padding: 0 20px; font-size: 14.5px; }
.btn--block { width: 100%; }

.btn-row { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; }

/* ---------- 6. 顶部导航 ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  z-index: 100;
  display: flex;
  align-items: center;
  transition: background 0.3s var(--ease), box-shadow 0.3s var(--ease), height 0.3s var(--ease);
  border-bottom: 1px solid transparent;
}
.nav.is-scrolled {
  height: 64px;
  background: rgba(8, 9, 12, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--line);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}
.nav__inner {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 28px;
}
.brand { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.brand__mark { width: 46px; height: 46px; flex-shrink: 0; object-fit: contain; }
.brand__name {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--text);
}
.brand__name em { font-style: normal; color: var(--gold); font-size: 13px; letter-spacing: 0.14em; margin-left: 4px; }

.nav__menu { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.nav__link {
  position: relative;
  padding: 9px 14px;
  font-size: 15px;
  color: var(--text-sub);
  border-radius: 6px;
  transition: color 0.2s var(--ease), background 0.2s var(--ease);
}
.nav__link:hover { color: var(--gold-bright); background: rgba(201, 164, 92, 0.07); }
.nav__link.is-active { color: var(--gold-bright); }
.nav__link.is-active::after {
  content: "";
  position: absolute;
  left: 14px; right: 14px; bottom: 2px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
}
.nav__cta { margin-left: 10px; }

.nav__toggle {
  display: none;
  width: 42px; height: 42px;
  margin-left: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  position: relative;
}
.nav__toggle span,
.nav__toggle span::before,
.nav__toggle span::after {
  position: absolute;
  left: 50%; width: 18px; height: 2px;
  background: var(--gold);
  transform: translateX(-50%);
  transition: transform 0.28s var(--ease), opacity 0.2s var(--ease);
}
.nav__toggle span { top: 50%; margin-top: -1px; }
.nav__toggle span::before { content: ""; top: -6px; left: 0; transform: none; }
.nav__toggle span::after { content: ""; top: 6px; left: 0; transform: none; }
.nav__toggle.is-open span { background: transparent; }
.nav__toggle.is-open span::before { transform: rotate(45deg); top: 0; }
.nav__toggle.is-open span::after { transform: rotate(-45deg); top: 0; }

/* ---------- 7. 首屏 Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(var(--nav-h) + 60px) 0 90px;
  overflow: hidden;
  isolation: isolate;
}
.hero__bg {
  position: absolute;
  inset: 0;
  z-index: -2;
  overflow: hidden;
}
.hero__bg img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: 50% 70%;
  transform: scale(1.12);
  opacity: 0.52;
  filter: saturate(0.95) contrast(1.06);
  animation: heroZoom 26s var(--ease) forwards;
}
@keyframes heroZoom {
  from { transform: scale(1.18); }
  to { transform: scale(1.08); }
}
.hero__veil {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(120% 90% at 50% 46%, rgba(7, 8, 10, 0.32) 0%, rgba(7, 8, 10, 0.82) 58%, rgba(7, 8, 10, 0.97) 100%),
    linear-gradient(90deg, rgba(7, 8, 10, 0.96) 0%, rgba(7, 8, 10, 0.34) 45%, rgba(7, 8, 10, 0.96) 100%),
    linear-gradient(0deg, var(--bg-base) 2%, transparent 34%);
}
.hero__inner { position: relative; z-index: 2; max-width: 860px; }
.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 16px 7px 10px;
  border: 1px solid var(--line);
  border-radius: 100px;
  background: rgba(201, 164, 92, 0.07);
  font-size: 13.5px;
  color: var(--gold-bright);
  letter-spacing: 0.06em;
  margin-bottom: 26px;
}
.hero__badge b {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 100px;
  background: linear-gradient(120deg, var(--gold-bright), var(--gold));
  color: #1a1408;
  font-size: 12px;
  letter-spacing: 0.04em;
}
.hero .h1 { margin-bottom: 8px; text-shadow: 0 6px 30px rgba(0, 0, 0, 0.6); }
.hero__sub {
  font-size: clamp(16px, 1.6vw, 19px);
  color: var(--text-sub);
  line-height: 2;
  max-width: 760px;
  margin: 24px 0 34px;
}
.hero__sub strong { color: var(--text); font-weight: 700; }
.hero__sub .gold { font-weight: 700; }

.hero .btn-row { margin-top: 34px; }

.hero__points {
  display: grid;
  grid-template-columns: repeat(3, max-content);
  gap: 10px 12px;
  margin-top: 38px;
}
.hero__point {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border: 1px solid var(--line-soft);
  border-radius: 100px;
  background: rgba(255, 255, 255, 0.025);
  font-size: 14px;
  color: var(--text-sub);
  transition: border-color 0.25s var(--ease), color 0.25s var(--ease);
}
.hero__point:hover { border-color: var(--line); color: var(--text); }
.hero__point svg { width: 15px; height: 15px; flex-shrink: 0; }

.hero__scroll {
  position: absolute;
  left: 50%; bottom: 26px;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--text-dim);
}
.hero__scroll i {
  display: block;
  width: 1px; height: 42px;
  background: linear-gradient(180deg, var(--gold), transparent);
  animation: scrollHint 2.2s infinite;
}
@keyframes scrollHint {
  0%, 100% { opacity: 0.25; transform: scaleY(0.6); }
  50% { opacity: 1; transform: scaleY(1); }
}

/* 首屏数据条 */
.hero__stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  margin-top: 46px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--line);
  backdrop-filter: blur(6px);
}
.hero__stat {
  background: rgba(12, 13, 17, 0.82);
  padding: 20px 18px;
  text-align: center;
}
.hero__stat b {
  display: block;
  font-family: var(--font-serif);
  font-size: 30px;
  line-height: 1.2;
  color: var(--gold-bright);
  letter-spacing: 0.02em;
}
.hero__stat span { font-size: 13.5px; color: var(--text-dim); letter-spacing: 0.06em; }

/* ---------- 8. 痛点区 ---------- */
.pain-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}
.pain {
  position: relative;
  padding: 30px 30px 28px 34px;
  border: 1px solid var(--line-soft);
  border-left: 2px solid rgba(201, 164, 92, 0.4);
  border-radius: var(--radius);
  background: linear-gradient(150deg, rgba(255, 255, 255, 0.035), rgba(255, 255, 255, 0.008));
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.pain:hover {
  transform: translateY(-4px);
  border-left-color: var(--gold);
  box-shadow: var(--shadow-card);
}
.pain__no {
  font-family: var(--font-serif);
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--gold);
  margin-bottom: 12px;
}
.pain__title { font-size: 20px; font-weight: 700; margin-bottom: 12px; }
.pain__desc { color: var(--text-sub); font-size: 15px; line-height: 1.9; }
.pain__desc em { font-style: normal; color: var(--gold-bright); font-weight: 700; }

/* ---------- 9. 卖点卡片 ---------- */
.sell-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.sell {
  position: relative;
  padding: 40px 32px 36px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-l);
  background:
    radial-gradient(120% 100% at 50% 0%, rgba(201, 164, 92, 0.09), transparent 55%),
    var(--surface);
  overflow: hidden;
  transition: transform 0.32s var(--ease), box-shadow 0.32s var(--ease), border-color 0.32s var(--ease);
}
.sell::after {
  content: "";
  position: absolute;
  top: 0; left: 50%;
  width: 60%; height: 1px;
  transform: translateX(-50%);
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  opacity: 0.55;
}
.sell:hover {
  transform: translateY(-6px);
  border-color: var(--line);
  box-shadow: var(--shadow-card), var(--shadow-gold);
}
.sell__icon {
  width: 54px; height: 54px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: linear-gradient(150deg, rgba(201, 164, 92, 0.16), rgba(201, 164, 92, 0.02));
  margin-bottom: 22px;
}
.sell__icon svg { width: 26px; height: 26px; }
.sell__title { font-family: var(--font-serif); font-size: 23px; font-weight: 700; margin-bottom: 14px; }
.sell__desc { color: var(--text-sub); font-size: 15px; line-height: 1.95; }
.sell__desc b { color: var(--text); }


/* ---------- 10. 痛点区结果条 ---------- */
.pain-result {
  margin-top: 26px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 12px 22px;
  padding: 22px 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(120deg, rgba(201, 164, 92, 0.10), rgba(201, 164, 92, 0.02));
  text-align: center;
}
.pain-result b {
  font-family: var(--font-serif);
  font-size: 18px;
  color: var(--gold-bright);
  letter-spacing: 0.06em;
}
.pain-result span { color: var(--text-sub); font-size: 14.5px; }
.pain-result i { color: var(--gold); font-style: normal; opacity: 0.6; }

/* ---------- 11. 办案全流程 ---------- */
.flow-layout {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 40px;
  align-items: start;
}
.flow-steps { position: relative; }
.flow-steps::before {
  content: "";
  position: absolute;
  left: 21px; top: 12px; bottom: 34px;
  width: 1px;
  background: linear-gradient(180deg, transparent, var(--gold), var(--gold-deep), transparent);
  opacity: 0.5;
}
.flow-step {
  position: relative;
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 18px;
  padding: 0 0 30px 0;
}
.flow-step:last-child { padding-bottom: 0; }
.flow-step__dot {
  width: 44px; height: 44px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-family: var(--font-serif);
  font-size: 16px;
  color: var(--gold-bright);
  background: var(--surface);
  border: 1px solid var(--line);
  position: relative;
  z-index: 1;
  transition: border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.flow-step:hover .flow-step__dot {
  border-color: var(--gold);
  box-shadow: 0 0 0 6px rgba(201, 164, 92, 0.08);
}
.flow-step__body { padding-top: 4px; }
.flow-step__title { font-size: 19px; font-weight: 700; margin-bottom: 8px; }
.flow-step__desc { color: var(--text-sub); font-size: 15px; line-height: 1.9; }
.flow-step__desc em { font-style: normal; color: var(--gold-bright); }

/* 案件主页示意（纯 CSS 绘制） */
.casedemo {
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  background: linear-gradient(180deg, var(--surface), #101218);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}
.casedemo__bar {
  display: flex; align-items: center; gap: 8px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line-soft);
  background: rgba(255, 255, 255, 0.02);
}
.casedemo__bar s { width: 9px; height: 9px; border-radius: 50%; background: rgba(201, 164, 92, 0.35); }
.casedemo__bar span { margin-left: 8px; font-size: 13px; color: var(--text-dim); letter-spacing: 0.06em; }
.casedemo__body { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--line-soft); }
.casedemo__col { padding: 20px; background: #0e1015; }
.casedemo__col h4 {
  font-size: 13px; letter-spacing: 0.14em; color: var(--gold);
  font-weight: 700; margin-bottom: 14px;
}
.casedemo__phase {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px;
  border-radius: 9px;
  font-size: 14px;
  color: var(--text-dim);
  border: 1px solid transparent;
}
.casedemo__phase + .casedemo__phase { margin-top: 4px; }
.casedemo__phase i {
  width: 8px; height: 8px; border-radius: 50%;
  background: rgba(255, 255, 255, 0.16);
  flex-shrink: 0;
}
.casedemo__phase.is-now {
  color: var(--gold-bright);
  border-color: var(--line);
  background: rgba(201, 164, 92, 0.09);
  font-weight: 700;
}
.casedemo__phase.is-now i { background: var(--gold-bright); box-shadow: 0 0 0 4px rgba(201, 164, 92, 0.16); }
.casedemo__file {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  padding: 10px 12px;
  border: 1px solid var(--line-soft);
  border-radius: 9px;
  font-size: 13.5px;
  color: var(--text-sub);
}
.casedemo__file + .casedemo__file { margin-top: 8px; }
.casedemo__file b {
  font-size: 11px; font-weight: 700; letter-spacing: 0.04em;
  color: var(--gold); padding: 2px 7px;
  border: 1px solid var(--line); border-radius: 100px;
}

/* ---------- 12. 核心功能网格 ---------- */
.feat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.feat {
  position: relative;
  padding: 30px 28px 28px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-l);
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.035), rgba(255, 255, 255, 0.006));
  transition: transform 0.32s var(--ease), border-color 0.32s var(--ease), box-shadow 0.32s var(--ease);
}
.feat:hover {
  transform: translateY(-5px);
  border-color: var(--line);
  box-shadow: var(--shadow-card);
}
.feat__top { display: flex; align-items: center; gap: 14px; margin-bottom: 16px; }
.feat__icon {
  width: 46px; height: 46px; flex-shrink: 0;
  display: grid; place-items: center;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: linear-gradient(150deg, rgba(201, 164, 92, 0.18), rgba(201, 164, 92, 0.02));
}
.feat__icon svg { width: 23px; height: 23px; }
.feat__title { font-size: 18.5px; font-weight: 700; line-height: 1.4; }
.feat__sub { font-size: 13px; color: var(--gold); letter-spacing: 0.06em; margin-top: 3px; }
.feat__desc { color: var(--text-sub); font-size: 14.5px; line-height: 1.9; margin-bottom: 14px; }
.feat__list { display: flex; flex-direction: column; gap: 7px; }
.feat__list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.7;
}
.feat__list li::before {
  content: "";
  position: absolute;
  left: 0; top: 9px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--gold-deep);
}
.feat--wide { grid-column: span 2; }
.feat--wide .feat__body { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }

.feat__list li b { color: var(--gold-bright); font-weight: 700; }

/* ---------- 12b. 产品版本（SaaS 版 / 私有部署版） ---------- */
.ed-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 26px;
}
.ed {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-l);
  background: linear-gradient(170deg, rgba(255, 255, 255, 0.035), rgba(255, 255, 255, 0.005));
  overflow: hidden;
  transition: transform 0.32s var(--ease), border-color 0.32s var(--ease), box-shadow 0.32s var(--ease);
}
.ed:hover { transform: translateY(-5px); box-shadow: var(--shadow-card); border-color: var(--line); }
.ed--private {
  border-color: var(--line);
  background:
    radial-gradient(120% 100% at 100% 0%, rgba(201, 164, 92, 0.13), transparent 58%),
    linear-gradient(170deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.006));
}
.ed__head { padding: 30px 30px 22px; border-bottom: 1px solid var(--line-soft); }
.ed__tag {
  display: inline-block;
  padding: 4px 12px;
  border: 1px solid var(--line);
  border-radius: 100px;
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: var(--gold-bright);
  margin-bottom: 14px;
}
.ed__title { font-family: var(--font-serif); font-size: 23px; font-weight: 700; line-height: 1.4; margin-bottom: 10px; }
.ed__desc { color: var(--text-sub); font-size: 14.5px; line-height: 1.9; }
.ed__list { flex: 1; padding: 12px 30px 28px; }
.ed__list li {
  display: grid;
  grid-template-columns: 88px 1fr;
  gap: 14px;
  padding: 13px 0;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.06);
  font-size: 14.5px;
  line-height: 1.8;
}
.ed__list li:last-child { border-bottom: 0; }
.ed__list b { color: var(--gold-bright); font-weight: 700; font-size: 13.5px; letter-spacing: 0.04em; }
.ed__list span { color: var(--text-sub); }
.ed__foot {
  margin-top: 26px;
  text-align: center;
  font-size: 14.5px;
  color: var(--text-dim);
}
.ed__foot a { color: var(--gold-bright); border-bottom: 1px solid rgba(201, 164, 92, 0.4); padding-bottom: 2px; }
.ed__foot a:hover { color: var(--gold); }

/* ---------- 13. 技术实力与数据安全 ---------- */
.trust-layout {
  display: grid;
  grid-template-columns: 1fr 0.86fr;
  gap: 40px;
  align-items: start;
}
.trust-list { display: grid; gap: 16px; }
.trust-item {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 16px;
  padding: 22px 24px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: linear-gradient(150deg, rgba(255, 255, 255, 0.032), rgba(255, 255, 255, 0.006));
  transition: border-color 0.3s var(--ease), transform 0.3s var(--ease);
}
.trust-item:hover { border-color: var(--line); transform: translateX(4px); }
.trust-item__no {
  width: 42px; height: 42px;
  display: grid; place-items: center;
  border-radius: 11px;
  border: 1px solid var(--line);
  background: rgba(201, 164, 92, 0.08);
  font-family: var(--font-serif);
  font-size: 15px;
  color: var(--gold-bright);
}
.trust-item__title { font-size: 17.5px; font-weight: 700; margin-bottom: 8px; }
.trust-item__desc { color: var(--text-sub); font-size: 14.5px; line-height: 1.9; }
.trust-item__desc b { color: var(--text); }

.arch {
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  padding: 30px 26px;
  background:
    radial-gradient(120% 90% at 50% 0%, rgba(201, 164, 92, 0.10), transparent 58%),
    linear-gradient(180deg, var(--surface), #0e1015);
  box-shadow: var(--shadow-card);
  position: sticky;
  top: 100px;
}
.arch__title {
  font-size: 13px; letter-spacing: 0.16em; color: var(--gold);
  font-weight: 700; text-align: center; margin-bottom: 24px;
}
.arch__box {
  border: 1px dashed rgba(201, 164, 92, 0.34);
  border-radius: var(--radius);
  padding: 20px 18px;
  text-align: center;
}
.arch__box h4 { font-size: 15.5px; font-weight: 700; margin-bottom: 6px; color: var(--text); }
.arch__box p { font-size: 13.5px; color: var(--text-dim); line-height: 1.8; }
.arch__box--local { background: rgba(201, 164, 92, 0.07); }
.arch__box--cloud { background: rgba(255, 255, 255, 0.025); }
.arch__flow {
  display: flex; flex-direction: column; align-items: center;
  gap: 6px; padding: 14px 0;
  font-size: 12.5px; color: var(--gold); letter-spacing: 0.06em;
}
.arch__flow i { display: block; width: 1px; height: 20px; background: linear-gradient(180deg, var(--gold), transparent); }
.arch__flow i.is-up { background: linear-gradient(0deg, var(--gold), transparent); }
.arch__note { margin-top: 20px; font-size: 13px; color: var(--text-dim); line-height: 1.8; text-align: center; }
.arch__note b { color: var(--gold-bright); }

/* ---------- 14. 数据与业务 ---------- */
.src-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.src {
  padding: 22px 20px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.035), rgba(255, 255, 255, 0.005));
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease);
}
.src:hover { transform: translateY(-4px); border-color: var(--line); }
.src__no { font-family: var(--font-serif); font-size: 12px; color: var(--gold); letter-spacing: 0.16em; margin-bottom: 10px; }
.src__name { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.src__desc { font-size: 13.5px; color: var(--text-dim); line-height: 1.8; }
.src--more { display: grid; place-items: center; text-align: center; border-style: dashed; border-color: var(--line); }
.src--more b { font-family: var(--font-serif); font-size: 15px; color: var(--gold-bright); line-height: 1.7; }
.src--more span { font-size: 12.5px; color: var(--text-dim); }

.biz { margin-top: 56px; }
.biz-table {
  width: 100%;
  border-collapse: collapse;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
}
.biz-table th, .biz-table td {
  padding: 16px 20px;
  text-align: left;
  font-size: 14.5px;
  border-bottom: 1px solid var(--line-soft);
  vertical-align: top;
}
.biz-table thead th {
  background: rgba(201, 164, 92, 0.09);
  color: var(--gold-bright);
  font-size: 13.5px;
  letter-spacing: 0.1em;
  font-weight: 700;
  white-space: nowrap;
}
.biz-table tbody tr:last-child td { border-bottom: 0; }
.biz-table tbody tr:hover { background: rgba(255, 255, 255, 0.02); }
.biz-table td:first-child {
  font-weight: 700;
  color: var(--gold-bright);
  white-space: nowrap;
  width: 130px;
}
.biz-table td:last-child { color: var(--text-sub); line-height: 1.9; }
.biz-sum {
  margin-top: 28px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.biz-sum > div { background: #0d0f14; padding: 22px 22px; }
.biz-sum b { display: block; font-family: var(--font-serif); font-size: 17px; color: var(--gold-bright); margin-bottom: 8px; }
.biz-sum span { font-size: 14px; color: var(--text-sub); line-height: 1.8; }

/* ---------- 15. 双视角价值 + 对比表 ---------- */
.value-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.value-card {
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-l);
  background: linear-gradient(170deg, rgba(255, 255, 255, 0.035), rgba(255, 255, 255, 0.005));
  overflow: hidden;
}
.value-card__head {
  padding: 26px 28px 20px;
  border-bottom: 1px solid var(--line-soft);
  background: radial-gradient(120% 120% at 0% 0%, rgba(201, 164, 92, 0.12), transparent 60%);
}
.value-card__tag { font-size: 12.5px; letter-spacing: 0.18em; color: var(--gold); margin-bottom: 10px; }
.value-card__title { font-family: var(--font-serif); font-size: 22px; font-weight: 700; }
.value-card__list { padding: 8px 28px 26px; }
.value-card__list li {
  display: grid;
  grid-template-columns: 20px 1fr;
  gap: 12px;
  padding: 13px 0;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.06);
  font-size: 14.5px;
  line-height: 1.8;
}
.value-card__list li:last-child { border-bottom: 0; }
.value-card__list li svg { width: 17px; height: 17px; margin-top: 5px; }
.value-card__list em { font-style: normal; color: var(--text); font-weight: 700; }
.value-card__list span { color: var(--text-sub); }

.compare-wrap {
  margin-top: 34px;
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  overflow: hidden;
  background: var(--surface);
}
.compare-head {
  padding: 22px 28px;
  border-bottom: 1px solid var(--line-soft);
  display: flex; flex-wrap: wrap; align-items: baseline; gap: 12px;
  background: rgba(201, 164, 92, 0.06);
}
.compare-head h3 { font-family: var(--font-serif); font-size: 20px; font-weight: 700; }
.compare-head span { font-size: 13.5px; color: var(--text-dim); }
.table-scroll { overflow-x: auto; }
.compare {
  width: 100%;
  min-width: 760px;
  border-collapse: collapse;
}
.compare th, .compare td {
  padding: 16px 20px;
  text-align: left;
  font-size: 14.5px;
  border-bottom: 1px solid var(--line-soft);
  line-height: 1.8;
}
.compare thead th {
  font-size: 13.5px;
  letter-spacing: 0.08em;
  color: var(--text-sub);
  font-weight: 700;
  background: rgba(255, 255, 255, 0.02);
  white-space: nowrap;
}
.compare thead th:last-child { color: var(--gold-bright); background: rgba(201, 164, 92, 0.1); }
.compare tbody th {
  font-weight: 700;
  color: var(--text);
  white-space: nowrap;
  width: 180px;
}
.compare tbody td { color: var(--text-dim); }
.compare tbody td:last-child {
  color: var(--text);
  font-weight: 700;
  background: rgba(201, 164, 92, 0.05);
}
.compare tbody tr:last-child th, .compare tbody tr:last-child td { border-bottom: 0; }
.compare tbody tr:hover { background: rgba(255, 255, 255, 0.018); }

/* ---------- 16. 常见问题 FAQ ---------- */
.faq { max-width: 940px; margin: 0 auto; }
.faq__item {
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: linear-gradient(150deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.005));
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}
.faq__item + .faq__item { margin-top: 12px; }
.faq__item.is-open { border-color: var(--line); background: rgba(201, 164, 92, 0.05); }
.faq__q {
  width: 100%;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 20px 24px;
  text-align: left;
  font-size: 16.5px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.6;
  transition: color 0.25s var(--ease);
}
.faq__q:hover { color: var(--gold-bright); }
.faq__q i {
  flex-shrink: 0;
  width: 22px; height: 22px;
  margin-top: 3px;
  position: relative;
  border-radius: 50%;
  border: 1px solid var(--line);
  transition: transform 0.32s var(--ease), background 0.32s var(--ease);
}
.faq__q i::before, .faq__q i::after {
  content: "";
  position: absolute;
  top: 50%; left: 50%;
  width: 10px; height: 1.6px;
  background: var(--gold);
  transform: translate(-50%, -50%);
}
.faq__q i::after { transform: translate(-50%, -50%) rotate(90deg); transition: opacity 0.25s var(--ease); }
.faq__item.is-open .faq__q i { background: rgba(201, 164, 92, 0.14); transform: rotate(180deg); }
.faq__item.is-open .faq__q i::after { opacity: 0; }
.faq__a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.36s var(--ease);
}
.faq__a p {
  padding: 0 24px 22px 60px;
  font-size: 15px;
  color: var(--text-sub);
  line-height: 1.95;
}
.faq__a b { color: var(--gold-bright); }

/* ---------- 17. 转化区 + 表单 ---------- */
.cta {
  position: relative;
  overflow: hidden;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(80% 120% at 50% 0%, rgba(201, 164, 92, 0.14), transparent 62%),
    linear-gradient(180deg, #0c0d12, #08090c);
}
.cta__inner {
  display: grid;
  grid-template-columns: 1fr 0.92fr;
  gap: 48px;
  align-items: center;
}
/* 简化版转化区（无表单） */
.cta__simple { max-width: 840px; margin: 0 auto; text-align: center; }
.cta__simple .eyebrow { justify-content: center; }
.cta__simple .cta__desc { max-width: 720px; margin: 0 auto 30px; }
.cta__simple .cta__bullet { max-width: 620px; margin: 0 auto 30px; }
/* 代理商售前团队引导卡 */
.cta__agent {
  max-width: 640px;
  margin: 0 auto;
  padding: 26px 30px;
  border: 1px solid rgba(201, 164, 92, 0.42);
  border-radius: var(--radius);
  background: linear-gradient(130deg, rgba(201, 164, 92, 0.16), rgba(201, 164, 92, 0.035));
  box-shadow: 0 14px 36px rgba(201, 164, 92, 0.1);
}
.cta__agent-icon {
  width: 44px; height: 44px;
  margin: 0 auto 14px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(201, 164, 92, 0.13);
}
.cta__agent-icon svg { width: 22px; height: 22px; }
.cta__agent b {
  display: block;
  font-family: var(--font-serif);
  font-size: 20px;
  letter-spacing: 0.04em;
  color: var(--gold-bright);
  margin-bottom: 9px;
}
.cta__agent span { display: block; font-size: 14px; line-height: 1.85; color: var(--text-sub); }
.cta__more { margin-top: 26px; }
.cta__title { font-family: var(--font-serif); font-size: clamp(26px, 3vw, 38px); font-weight: 700; line-height: 1.35; margin-bottom: 18px; }
.cta__desc { color: var(--text-sub); font-size: 16px; line-height: 1.95; margin-bottom: 26px; }
.cta__desc b { color: var(--gold-bright); }
.cta__bullet { display: flex; flex-direction: column; gap: 12px; }
.cta__bullet li {
  display: flex; align-items: flex-start; gap: 10px;
  font-size: 15px; color: var(--text-sub);
}
.cta__bullet svg { width: 17px; height: 17px; flex-shrink: 0; margin-top: 5px; }

.form {
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  padding: 32px 30px;
  background: rgba(14, 16, 21, 0.92);
  box-shadow: var(--shadow-card);
}
.form__title { font-family: var(--font-serif); font-size: 21px; font-weight: 700; margin-bottom: 8px; }
.form__sub { font-size: 13.5px; color: var(--text-dim); margin-bottom: 22px; }
.form__row { margin-bottom: 16px; }
.form__row label {
  display: block;
  font-size: 13.5px;
  color: var(--text-sub);
  margin-bottom: 8px;
  letter-spacing: 0.04em;
}
.form__row input, .form__row select {
  width: 100%;
  height: 48px;
  padding: 0 15px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-s);
  background: rgba(255, 255, 255, 0.03);
  font-size: 15px;
  color: var(--text);
  transition: border-color 0.25s var(--ease), background 0.25s var(--ease);
  appearance: none;
  -webkit-appearance: none;
}
.form__row select {
  background-image: linear-gradient(45deg, transparent 50%, var(--gold) 50%), linear-gradient(135deg, var(--gold) 50%, transparent 50%);
  background-position: calc(100% - 20px) 21px, calc(100% - 14px) 21px;
  background-size: 6px 6px, 6px 6px;
  background-repeat: no-repeat;
}
.form__row select option { background: #14161c; color: var(--text); }
.form__row input::placeholder { color: #6f6b63; }
.form__row input:focus, .form__row select:focus {
  outline: none;
  border-color: var(--gold);
  background: rgba(201, 164, 92, 0.06);
}
.form__tip { margin-top: 14px; font-size: 13.5px; line-height: 1.8; min-height: 20px; color: var(--text-dim); }
.form__tip.is-warn { color: var(--warn); }
.form__tip.is-ok { color: var(--ok); }
.form__note { margin-top: 14px; font-size: 12.5px; color: var(--text-dim); line-height: 1.7; }

/* ---------- 18. 页脚 ---------- */
.footer {
  background: var(--bg-deep);
  border-top: 1px solid var(--line-soft);
  padding: 56px 0 30px;
}
.footer__top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 34px;
  border-bottom: 1px solid var(--line-soft);
}
.footer__brand { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.footer__brand .footer__mark { width: 42px; height: 42px; flex-shrink: 0; object-fit: contain; }
.footer__brand b { font-family: var(--font-serif); font-size: 19px; letter-spacing: 0.06em; }
.footer__slogan { color: var(--text-dim); font-size: 14px; line-height: 1.9; max-width: 380px; }
.footer__slogan em { color: var(--gold); font-style: normal; }
.footer h4 { font-size: 14px; letter-spacing: 0.12em; color: var(--gold); margin-bottom: 16px; font-weight: 700; }
.footer__links { display: flex; flex-direction: column; gap: 10px; }
.footer__links a { font-size: 14px; color: var(--text-dim); transition: color 0.2s var(--ease); }
.footer__links a:hover { color: var(--gold-bright); }
.footer__bottom {
  padding-top: 22px;
  display: flex; flex-wrap: wrap; gap: 12px;
  justify-content: space-between;
  font-size: 13px;
  color: var(--text-dim);
}
.footer__bottom span i { font-style: normal; color: var(--gold-deep); }
.footer__bottom a {
  color: var(--text-dim);
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}
.footer__bottom a:hover { color: var(--gold-bright); border-bottom-color: rgba(201, 164, 92, 0.45); }

/* 移动端菜单展开时：页面遮罩 + 锁定滚动 */
body.nav-open { overflow: hidden; }
body.nav-open::after {
  content: "";
  position: fixed;
  inset: var(--nav-h) 0 0 0;
  background: rgba(4, 5, 7, 0.88);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 90;
}

/* ---------- 19. 滚动淡入 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
  will-change: opacity, transform;
}
[data-reveal].is-in { opacity: 1; transform: none; }

/* ---------- 20. 响应式 ---------- */
@media (max-width: 1180px) {
  .src-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 1024px) {
  :root { --maxw: 100%; }
  .section { padding: 78px 0; }
  .nav__menu { gap: 0; }
  .nav__link { padding: 9px 10px; font-size: 14.5px; }
  .flow-layout, .trust-layout, .cta__inner { grid-template-columns: 1fr; gap: 34px; }
  .arch { position: static; }
  .feat-grid { grid-template-columns: repeat(2, 1fr); }
  .feat--wide { grid-column: span 2; }
  .footer__top { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 980px) {
  .nav__toggle { display: block; }
  .nav__menu {
    position: fixed;
    top: var(--nav-h);
    left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 14px 20px 26px;
    background: rgba(8, 9, 12, 0.97);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 24px 50px rgba(0, 0, 0, 0.6);
    transform: translateY(-14px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.28s var(--ease), transform 0.28s var(--ease), visibility 0.28s;
    max-height: calc(100vh - var(--nav-h));
    overflow-y: auto;
  }
  .nav__menu.is-open { transform: none; opacity: 1; visibility: visible; }
  .nav__link { padding: 14px 12px; font-size: 16px; border-bottom: 1px solid var(--line-soft); border-radius: 0; }
  .nav__link.is-active::after { display: none; }
  .nav__link.is-active { color: var(--gold-bright); background: rgba(201, 164, 92, 0.07); }
  .nav__cta { margin: 16px 0 0; }
  .hero { min-height: auto; padding: calc(var(--nav-h) + 46px) 0 76px; }
  .hero__bg img { object-position: 78% 62%; animation: none; transform: scale(1.04); }
  .hero__stats { grid-template-columns: repeat(2, 1fr); }
  .sell-grid { grid-template-columns: 1fr; }
  .casedemo__body { grid-template-columns: 1fr; }
  .value-grid { grid-template-columns: 1fr; }
  .ed-grid { grid-template-columns: 1fr; }
  .hero__points { grid-template-columns: repeat(2, max-content); }
}

@media (max-width: 760px) {
  body { font-size: 15.5px; }
  .section { padding: 64px 0; }
  .section-head { margin-bottom: 40px; }
  .pain-grid { grid-template-columns: 1fr; }
  .feat-grid { grid-template-columns: 1fr; }
  .feat--wide { grid-column: span 1; }
  .feat--wide .feat__body { grid-template-columns: 1fr; }
  .src-grid { grid-template-columns: repeat(2, 1fr); }
  .biz-sum { grid-template-columns: 1fr; }
  .footer__top { grid-template-columns: 1fr; gap: 28px; }
  .pain-result { flex-direction: column; gap: 8px; }
  .pain-result i { display: none; }
  .flow-step { grid-template-columns: 38px 1fr; gap: 14px; }
  .flow-step__dot { width: 38px; height: 38px; font-size: 14px; }
  .flow-steps::before { left: 18px; }
  .form { padding: 26px 22px; }
  .faq__a p { padding: 0 20px 20px 20px; }
  .faq__q { padding: 18px 20px; font-size: 15.5px; }
  .trust-item { grid-template-columns: 1fr; gap: 12px; padding: 20px; }
  .value-card__list { padding: 6px 20px 22px; }
  .ed__head { padding: 24px 22px 18px; }
  .ed__list { padding: 8px 22px 24px; }
  .ed__list li { grid-template-columns: 1fr; gap: 3px; }
}

@media (max-width: 480px) {
  .wrap, .nav__inner { padding: 0 16px; }
  .h1 { font-size: 26px; }
  .hero__points { grid-template-columns: 1fr; }
  .hero__stats { grid-template-columns: 1fr 1fr; }
  .hero__stat { padding: 16px 10px; }
  .hero__stat b { font-size: 25px; }
  .src-grid { grid-template-columns: 1fr; }
  .btn { width: 100%; }
  .btn-row { flex-direction: column; align-items: stretch; }
  .nav__cta { width: auto; height: 50px; }
  .casedemo__body { grid-template-columns: 1fr; }
}

@media (max-width: 360px) {
  .h1 { font-size: 23px; }
  .hero__badge { font-size: 12.5px; padding: 6px 12px 6px 8px; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
  html { scroll-behavior: auto; }
  [data-reveal] { opacity: 1; transform: none; }
}

@media print {
  .nav, .hero__scroll, .cta, .footer__bottom { display: none; }
  body { background: #fff; color: #000; }
  [data-reveal] { opacity: 1; transform: none; }
}