/* =========================================================
   小白马智学 · 设计系统
   Indigo #534AB7 × Teal #1D9E75 —— 专业且温暖的教育科技风
   ========================================================= */

:root {
  /* 主色 */
  --indigo-900: #2A2270;
  --indigo-800: #3A3191;
  --indigo-700: #4438B5;
  --indigo-600: #534AB7;
  --indigo-500: #6C63D6;
  --indigo-300: #A9A2EC;
  --indigo-100: #E9E7F8;
  --indigo-50: #F4F3FC;

  /* 辅色 */
  --teal-700: #127558;
  --teal-600: #158261;
  --teal-500: #1D9E75;
  --teal-300: #7ED3B4;
  --teal-100: #E3F5EE;
  --teal-50: #F0FBF7;

  /* 强调 */
  --amber-500: #F5A524;
  --amber-100: #FEF3DC;
  --coral-500: #F2635B;
  --coral-100: #FDE9E8;

  /* 中性 */
  --ink-900: #171936;
  --ink-800: #262A45;
  --ink-700: #3C4160;
  --ink-500: #6B7093;
  --ink-400: #9095B2;
  --line: #E6E8F2;
  --line-soft: #F0F1F8;
  --bg: #FFFFFF;
  --bg-soft: #F7F8FD;
  --bg-deep: #F2F4FB;

  /* 尺寸 */
  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 22px;
  --radius-xl: 28px;
  --shadow-xs: 0 1px 2px rgba(23, 25, 54, .05);
  --shadow-sm: 0 4px 16px rgba(23, 25, 54, .06);
  --shadow: 0 10px 32px rgba(23, 25, 54, .08);
  --shadow-lg: 0 20px 56px rgba(23, 25, 54, .12);
  --shadow-indigo: 0 16px 40px rgba(83, 74, 183, .28);

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

  --font: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", -apple-system,
    BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink-800);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

h1, h2, h3, h4 { color: var(--ink-900); margin: 0; line-height: 1.3; font-weight: 700; letter-spacing: -.01em; }
p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }

/* ---------- 布局工具 ---------- */
.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.section { padding: 96px 0; position: relative; }
.section--soft { background: var(--bg-soft); }
.section--deep { background: var(--bg-deep); }

.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 14px; font-weight: 600; letter-spacing: .02em;
  color: var(--indigo-600);
  background: var(--indigo-50);
  border: 1px solid var(--indigo-100);
  padding: 6px 14px; border-radius: 999px;
}
.eyebrow__dot { width: 6px; height: 6px; border-radius: 50%; background: var(--indigo-600); }

.sec-head { max-width: 720px; margin: 0 auto 56px; text-align: center; }
.sec-head h2 { font-size: clamp(28px, 3.4vw, 40px); margin: 18px 0 14px; }
.sec-head p { font-size: 17px; color: var(--ink-500); }
.sec-head--left { margin-left: 0; text-align: left; }

.grad-text {
  background: linear-gradient(100deg, var(--indigo-600), var(--teal-500));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 48px; padding: 0 26px; border-radius: 999px;
  font-size: 16px; font-weight: 600; transition: all .22s ease;
  white-space: nowrap;
}
.btn--primary {
  background: linear-gradient(100deg, var(--indigo-600), var(--indigo-500));
  color: #fff; box-shadow: var(--shadow-indigo);
}
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 20px 48px rgba(83, 74, 183, .36); }
.btn--ghost {
  background: #fff; color: var(--indigo-700);
  border: 1px solid var(--indigo-100); box-shadow: var(--shadow-xs);
}
.btn--ghost:hover { border-color: var(--indigo-300); transform: translateY(-2px); }
.btn--teal { background: linear-gradient(100deg, var(--teal-600), var(--teal-500)); color: #fff; box-shadow: 0 14px 34px rgba(29, 158, 117, .3); }
.btn--teal:hover { transform: translateY(-2px); }
.btn--sm { height: 40px; padding: 0 18px; font-size: 14px; }

/* ---------- 导航 ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--nav-h); display: flex; align-items: center;
  background: rgba(255, 255, 255, .78);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: all .25s ease;
}
.nav.is-stuck { background: rgba(255, 255, 255, .95); border-bottom-color: var(--line); box-shadow: var(--shadow-xs); }
.nav__inner { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; display: flex; align-items: center; gap: 32px; }

.brand { display: flex; align-items: center; gap: 11px; flex-shrink: 0; }
.brand__mark {
  width: 38px; height: 38px; border-radius: 11px; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--indigo-600), var(--teal-500));
  box-shadow: 0 6px 18px rgba(83, 74, 183, .3);
}
.brand__mark svg { width: 22px; height: 22px; }
.brand__name { font-size: 18px; font-weight: 800; color: var(--ink-900); letter-spacing: -.02em; }
.brand__sub { font-size: 11px; color: var(--ink-400); letter-spacing: .16em; font-weight: 500; }

.nav__links { display: flex; gap: 4px; margin-left: auto; }
.nav__links a {
  padding: 8px 14px; border-radius: 8px; font-size: 15px; font-weight: 500; color: var(--ink-700);
  transition: all .18s ease;
}
.nav__links a:hover { color: var(--indigo-600); background: var(--indigo-50); }
.nav__cta { display: flex; gap: 10px; align-items: center; }
.nav__burger { display: none; width: 40px; height: 40px; border-radius: 10px; align-items: center; justify-content: center; }
.nav__burger span { display: block; width: 18px; height: 2px; background: var(--ink-800); border-radius: 2px; position: relative; transition: all .2s; }
.nav__burger span::before, .nav__burger span::after {
  content: ""; position: absolute; left: 0; width: 18px; height: 2px; background: var(--ink-800); border-radius: 2px; transition: all .2s;
}
.nav__burger span::before { top: -6px; }
.nav__burger span::after { top: 6px; }
.nav.is-open .nav__burger span { background: transparent; }
.nav.is-open .nav__burger span::before { top: 0; transform: rotate(45deg); }
.nav.is-open .nav__burger span::after { top: 0; transform: rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  padding: calc(var(--nav-h) + 72px) 0 88px;
  background:
    radial-gradient(900px 460px at 78% 8%, rgba(83, 74, 183, .13), transparent 62%),
    radial-gradient(700px 420px at 10% 92%, rgba(29, 158, 117, .12), transparent 60%),
    linear-gradient(180deg, #fff, var(--bg-soft));
  position: relative; overflow: hidden;
}
.hero::after {
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: .5;
  background-image: radial-gradient(rgba(83, 74, 183, .16) 1px, transparent 1px);
  background-size: 26px 26px;
  mask-image: linear-gradient(180deg, rgba(0,0,0,.6), transparent 70%);
  -webkit-mask-image: linear-gradient(180deg, rgba(0,0,0,.6), transparent 70%);
}
.hero__grid { display: grid; grid-template-columns: 1.06fr .94fr; gap: 56px; align-items: center; position: relative; z-index: 1; }

.hero h1 { font-size: clamp(34px, 4.6vw, 54px); letter-spacing: -.03em; margin: 20px 0 20px; }
.hero h1 em { font-style: normal; position: relative; }
.hero h1 em::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 4px; height: 10px; z-index: -1;
  background: linear-gradient(90deg, rgba(29, 158, 117, .32), rgba(29, 158, 117, 0));
  border-radius: 4px;
}
.hero__lead { font-size: 18px; color: var(--ink-500); max-width: 520px; }
.hero__btns { display: flex; gap: 14px; margin: 32px 0 26px; flex-wrap: wrap; }
.hero__note { display: flex; align-items: center; gap: 8px; font-size: 14px; color: var(--ink-400); }
.hero__note b { color: var(--indigo-600); font-weight: 600; }

.hero__stats { display: flex; gap: 40px; margin-top: 44px; padding-top: 28px; border-top: 1px solid var(--line); flex-wrap: wrap; }
.stat { min-width: 118px; }
.stat__num { font-size: 32px; font-weight: 800; color: var(--ink-900); letter-spacing: -.02em; line-height: 1.2; }
.stat__num span { font-size: 18px; font-weight: 700; }
.stat__label { font-size: 13px; color: var(--ink-500); }

/* Hero 右侧：学情卡 */
.hero-card {
  background: #fff; border-radius: var(--radius-xl); padding: 22px;
  box-shadow: var(--shadow-lg); border: 1px solid var(--line-soft);
  position: relative;
}
.hero-card__bar { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.hero-card__title { font-size: 15px; font-weight: 700; color: var(--ink-900); }
.pill { font-size: 12px; font-weight: 600; padding: 4px 10px; border-radius: 999px; }
.pill--live { color: var(--teal-700); background: var(--teal-100); display: inline-flex; align-items: center; gap: 6px; }
.pill--live::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--teal-500); animation: pulse 1.6s infinite; }
@keyframes pulse { 0%,100% { opacity: 1; transform: scale(1); } 50% { opacity: .35; transform: scale(.8); } }

.student-row { display: flex; align-items: center; gap: 12px; padding: 12px; border-radius: var(--radius); background: var(--bg-soft); margin-bottom: 16px; }
.avatar { width: 42px; height: 42px; border-radius: 12px; display: grid; place-items: center; font-weight: 700; color: #fff; font-size: 16px; background: linear-gradient(135deg, var(--indigo-500), var(--indigo-700)); flex-shrink: 0; }
.student-row__name { font-size: 15px; font-weight: 700; color: var(--ink-900); }
.student-row__meta { font-size: 12px; color: var(--ink-400); }

.mini-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-bottom: 16px; }
.mini { padding: 12px 10px; border-radius: var(--radius); background: var(--bg-soft); text-align: center; }
.mini__v { font-size: 20px; font-weight: 800; letter-spacing: -.02em; }
.mini__k { font-size: 11px; color: var(--ink-400); margin-top: 2px; }

.kp-list { display: grid; gap: 11px; }
.kp { display: grid; gap: 6px; }
.kp__top { display: flex; justify-content: space-between; font-size: 13px; }
.kp__name { font-weight: 600; color: var(--ink-700); }
.kp__v { font-weight: 700; color: var(--indigo-600); }
.bar { height: 7px; border-radius: 999px; background: var(--line-soft); overflow: hidden; }
.bar__fill { height: 100%; border-radius: 999px; background: linear-gradient(90deg, var(--indigo-600), var(--teal-500)); width: 0; transition: width 1.2s cubic-bezier(.22,1,.36,1); }
.bar__fill--warn { background: linear-gradient(90deg, var(--amber-500), #F7C46C); }
.bar__fill--bad { background: linear-gradient(90deg, var(--coral-500), #F79A94); }

/* ---------- 信任条 ---------- */
.trust { padding: 40px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: #fff; }
.trust__inner { display: flex; align-items: center; justify-content: space-between; gap: 28px; flex-wrap: wrap; }
.trust__lead { font-size: 14px; color: var(--ink-400); font-weight: 500; }
.trust__items { display: flex; gap: 34px; flex-wrap: wrap; }
.trust__item { display: flex; align-items: center; gap: 9px; font-size: 14px; font-weight: 600; color: var(--ink-700); }
.trust__item svg { width: 18px; height: 18px; flex-shrink: 0; }

/* ---------- 痛点 ---------- */
.pain-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.pain {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 28px; transition: all .25s ease;
}
.pain:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--indigo-100); }
.pain__who { font-size: 12px; font-weight: 700; letter-spacing: .08em; color: var(--ink-400); margin-bottom: 14px; }
.pain h3 { font-size: 19px; margin-bottom: 10px; }
.pain p { font-size: 15px; color: var(--ink-500); }
.pain__quote {
  margin-top: 18px; padding: 12px 14px; border-radius: var(--radius-sm);
  background: var(--coral-100); color: #A63C36; font-size: 14px; font-weight: 500;
  border-left: 3px solid var(--coral-500);
}

/* ---------- 能力卡 ---------- */
.feat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.feat {
  position: relative; background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius-lg); padding: 30px 26px; overflow: hidden;
  transition: all .28s ease;
}
.feat::before {
  content: ""; position: absolute; inset: 0; opacity: 0; transition: opacity .28s;
  background: radial-gradient(420px 220px at 100% 0%, var(--indigo-50), transparent 70%);
}
.feat:hover { transform: translateY(-5px); box-shadow: var(--shadow); border-color: var(--indigo-100); }
.feat:hover::before { opacity: 1; }
.feat__icon {
  width: 48px; height: 48px; border-radius: 14px; display: grid; place-items: center;
  margin-bottom: 18px; background: var(--indigo-50); position: relative;
}
.feat__icon svg { width: 24px; height: 24px; }
.feat--teal .feat__icon { background: var(--teal-50); }
.feat h3 { font-size: 19px; margin-bottom: 10px; }
.feat p { font-size: 15px; color: var(--ink-500); position: relative; }
.feat__tags { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 16px; position: relative; }
.tag { font-size: 12px; padding: 4px 10px; border-radius: 6px; background: var(--bg-soft); color: var(--ink-500); font-weight: 500; }

/* ---------- AI 督学后台 ---------- */
.monitor { display: grid; grid-template-columns: .92fr 1.08fr; gap: 48px; align-items: center; }
.console {
  background: var(--ink-900); border-radius: var(--radius-lg); overflow: hidden;
  box-shadow: 0 30px 70px rgba(23, 25, 54, .3);
}
.console__bar { display: flex; align-items: center; gap: 8px; padding: 14px 18px; background: rgba(255,255,255,.05); border-bottom: 1px solid rgba(255,255,255,.08); }
.dot { width: 10px; height: 10px; border-radius: 50%; }
.console__name { margin-left: 10px; font-size: 13px; color: rgba(255,255,255,.6); font-weight: 500; }
.console__body { padding: 20px; }
.console__kpis { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-bottom: 18px; }
.ckpi { padding: 14px; border-radius: 12px; background: rgba(255,255,255,.06); }
.ckpi__v { font-size: 22px; font-weight: 800; color: #fff; }
.ckpi__k { font-size: 11px; color: rgba(255,255,255,.5); margin-top: 2px; }

.alert {
  display: flex; align-items: center; gap: 12px; padding: 12px 14px;
  border-radius: 12px; background: rgba(242, 99, 91, .14); border: 1px solid rgba(242, 99, 91, .3);
  margin-bottom: 10px;
}
.alert--warn { background: rgba(245, 165, 36, .14); border-color: rgba(245, 165, 36, .3); }
.alert--ok { background: rgba(29, 158, 117, .14); border-color: rgba(29, 158, 117, .3); }
.alert__ico { width: 28px; height: 28px; border-radius: 8px; display: grid; place-items: center; background: var(--coral-500); flex-shrink: 0; }
.alert--warn .alert__ico { background: var(--amber-500); }
.alert--ok .alert__ico { background: var(--teal-500); }
.alert__ico svg { width: 15px; height: 15px; }
.alert__t { font-size: 13px; font-weight: 700; color: #fff; }
.alert__d { font-size: 12px; color: rgba(255,255,255,.55); }
.alert__time { margin-left: auto; font-size: 11px; color: rgba(255,255,255,.4); flex-shrink: 0; }

/* ---------- 四端 ---------- */
.ends { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.end {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 26px 22px; transition: all .25s ease;
}
.end:hover { border-color: var(--indigo-100); box-shadow: var(--shadow); transform: translateY(-4px); }
.end__n { font-size: 12px; font-weight: 700; color: var(--indigo-300); letter-spacing: .1em; }
.end h3 { font-size: 18px; margin: 10px 0 10px; }
.end p { font-size: 14px; color: var(--ink-500); }
.end__list { margin-top: 16px; display: grid; gap: 8px; }
.end__list li { display: flex; gap: 8px; font-size: 13px; color: var(--ink-700); }
.end__list li::before { content: ""; width: 5px; height: 5px; border-radius: 50%; background: var(--teal-500); margin-top: 8px; flex-shrink: 0; }

/* ---------- 闭环流程 ---------- */
.flow { display: grid; grid-template-columns: repeat(6, 1fr); gap: 14px; margin-top: 8px; position: relative; }
.flow__step { text-align: center; position: relative; }
.flow__circle {
  width: 64px; height: 64px; margin: 0 auto 14px; border-radius: 50%;
  display: grid; place-items: center; font-size: 18px; font-weight: 800; color: #fff;
  background: linear-gradient(135deg, var(--indigo-600), var(--indigo-500));
  box-shadow: 0 10px 24px rgba(83, 74, 183, .26); position: relative; z-index: 1;
}
.flow__step:nth-child(even) .flow__circle { background: linear-gradient(135deg, var(--teal-600), var(--teal-500)); box-shadow: 0 10px 24px rgba(29, 158, 117, .26); }
.flow__step:not(:last-child)::after {
  content: ""; position: absolute; top: 32px; left: 58%; width: 84%; height: 2px;
  background: repeating-linear-gradient(90deg, var(--indigo-100) 0 6px, transparent 6px 12px);
}
.flow__step h4 { font-size: 15px; margin-bottom: 6px; }
.flow__step p { font-size: 13px; color: var(--ink-500); line-height: 1.6; }

/* ---------- 方案 ---------- */
.plans { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.plan {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 32px 28px; display: flex; flex-direction: column; transition: all .25s;
}
.plan:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.plan--hot { border-color: var(--indigo-300); box-shadow: 0 14px 40px rgba(83, 74, 183, .14); }
.plan__badge {
  position: absolute; top: -12px; left: 28px;
  background: linear-gradient(100deg, var(--indigo-600), var(--teal-500)); color: #fff;
  font-size: 12px; font-weight: 700; padding: 4px 12px; border-radius: 999px;
}
.plan { position: relative; }
.plan h3 { font-size: 20px; margin-bottom: 8px; }
.plan__who { font-size: 13px; color: var(--indigo-600); font-weight: 600; margin-bottom: 16px; }
.plan p { font-size: 14px; color: var(--ink-500); margin-bottom: 20px; }
.plan__list { display: grid; gap: 10px; margin-bottom: 24px; }
.plan__list li { display: flex; gap: 9px; font-size: 14px; color: var(--ink-700); }
.plan__list svg { width: 16px; height: 16px; flex-shrink: 0; margin-top: 4px; }
.plan__foot { margin-top: auto; }

/* ---------- 成果数据 ---------- */
.metrics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.metric {
  background: #fff; border-radius: var(--radius-lg); padding: 28px 24px;
  border: 1px solid var(--line-soft); box-shadow: var(--shadow-xs); text-align: center;
}
.metric__v { font-size: 40px; font-weight: 800; letter-spacing: -.03em; line-height: 1.1; }
.metric__v span { font-size: 20px; }
.metric__k { font-size: 14px; color: var(--ink-700); font-weight: 600; margin-top: 8px; }
.metric__d { font-size: 12px; color: var(--ink-400); margin-top: 4px; }

/* ---------- 案例 ---------- */
.cases { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.case {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 28px; transition: all .25s;
}
.case:hover { box-shadow: var(--shadow); transform: translateY(-4px); }
.case__q { font-size: 15px; color: var(--ink-700); line-height: 1.8; }
.case__gain {
  display: inline-flex; align-items: baseline; gap: 6px; margin: 18px 0 14px;
  padding: 8px 14px; border-radius: 10px; background: var(--teal-50);
  color: var(--teal-700); font-weight: 800; font-size: 22px;
}
.case__gain small { font-size: 12px; font-weight: 600; }
.case__who { display: flex; align-items: center; gap: 11px; }
.case__who b { font-size: 14px; color: var(--ink-900); }
.case__who span { font-size: 12px; color: var(--ink-400); display: block; }

/* ---------- 关于 ---------- */
.about { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.about__list { display: grid; gap: 18px; margin-top: 26px; }
.about__item { display: flex; gap: 14px; }
.about__ico { width: 40px; height: 40px; border-radius: 11px; background: var(--indigo-50); display: grid; place-items: center; flex-shrink: 0; }
.about__ico svg { width: 20px; height: 20px; }
.about__item b { display: block; font-size: 15px; color: var(--ink-900); }
.about__item span { font-size: 14px; color: var(--ink-500); }

.contact-card {
  background: #fff; border-radius: var(--radius-xl); padding: 34px;
  box-shadow: var(--shadow-lg); border: 1px solid var(--line-soft);
}
.contact-card h3 { font-size: 22px; margin-bottom: 6px; }
.contact-card__sub { font-size: 14px; color: var(--ink-500); margin-bottom: 24px; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.field { display: grid; gap: 6px; margin-bottom: 14px; }
.field label { font-size: 13px; font-weight: 600; color: var(--ink-700); }
.field input, .field select, .field textarea {
  height: 46px; padding: 0 14px; border-radius: 12px; border: 1px solid var(--line);
  font-size: 15px; font-family: inherit; color: var(--ink-800); background: #fff;
  transition: all .18s; width: 100%;
}
.field textarea { height: auto; padding: 12px 14px; resize: vertical; min-height: 84px; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--indigo-500); box-shadow: 0 0 0 3px var(--indigo-100);
}
.field .err { font-size: 12px; color: var(--coral-500); display: none; }
.field.is-error input { border-color: var(--coral-500); }
.field.is-error .err { display: block; }
.form-note { font-size: 12px; color: var(--ink-400); margin-top: 12px; text-align: center; }
.form-ok {
  display: none; text-align: center; padding: 28px 10px;
}
.form-ok svg { width: 52px; height: 52px; margin: 0 auto 14px; }
.form-ok b { display: block; font-size: 17px; color: var(--ink-900); }
.form-ok span { font-size: 14px; color: var(--ink-500); }

/* ---------- CTA 通栏 ---------- */
.cta-band {
  background: linear-gradient(120deg, var(--indigo-800), var(--indigo-600) 55%, var(--teal-600));
  border-radius: var(--radius-xl); padding: 56px 48px; color: #fff;
  display: flex; align-items: center; justify-content: space-between; gap: 32px; flex-wrap: wrap;
  position: relative; overflow: hidden;
}
.cta-band::after {
  content: ""; position: absolute; right: -60px; top: -80px; width: 320px; height: 320px;
  border-radius: 50%; background: rgba(255,255,255,.08);
}
.cta-band h2 { color: #fff; font-size: clamp(24px, 2.8vw, 34px); margin-bottom: 10px; }
.cta-band p { color: rgba(255,255,255,.78); font-size: 16px; }
.cta-band .btn { position: relative; z-index: 1; }
.btn--onDark { background: #fff; color: var(--indigo-700); box-shadow: 0 14px 34px rgba(0,0,0,.18); }
.btn--onDark:hover { transform: translateY(-2px); }
.btn--outline { border: 1px solid rgba(255,255,255,.45); color: #fff; }
.btn--outline:hover { background: rgba(255,255,255,.12); }

/* ---------- 页脚 ---------- */
.footer { background: var(--ink-900); color: rgba(255,255,255,.6); padding: 64px 0 28px; margin-top: 40px; }
.footer__grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 40px; }
.footer .brand__name { color: #fff; }
.footer__about { font-size: 14px; margin: 16px 0 20px; max-width: 300px; line-height: 1.8; }
.footer h4 { color: #fff; font-size: 15px; margin-bottom: 16px; }
.footer li { font-size: 14px; margin-bottom: 10px; }
.footer li a:hover { color: #fff; }
.footer__contact li { display: flex; gap: 9px; align-items: flex-start; }
.footer__contact svg { width: 15px; height: 15px; margin-top: 4px; flex-shrink: 0; opacity: .7; }
.footer__bottom {
  margin-top: 44px; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.1);
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: 13px;
}

/* ---------- 滚动入场 ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s cubic-bezier(.22,1,.36,1), transform .7s cubic-bezier(.22,1,.36,1); }
.reveal.is-in { opacity: 1; transform: none; }
.reveal-d1 { transition-delay: .08s; }
.reveal-d2 { transition-delay: .16s; }
.reveal-d3 { transition-delay: .24s; }
.reveal-d4 { transition-delay: .32s; }

/* ---------- 报告页 ---------- */
.rp-topbar {
  position: sticky; top: 0; z-index: 60; background: rgba(255,255,255,.94);
  backdrop-filter: blur(12px); border-bottom: 1px solid var(--line);
}
.rp-topbar__in { max-width: var(--maxw); margin: 0 auto; padding: 12px 24px; display: flex; align-items: center; gap: 20px; }
.rp-back { display: inline-flex; align-items: center; gap: 7px; font-size: 14px; font-weight: 600; color: var(--indigo-600); }
.rp-back svg { width: 15px; height: 15px; }
.rp-tabs { display: flex; gap: 6px; margin-left: auto; background: var(--bg-soft); padding: 4px; border-radius: 999px; }
.rp-tab {
  padding: 8px 18px; border-radius: 999px; font-size: 14px; font-weight: 600;
  color: var(--ink-500); transition: all .2s;
}
.rp-tab.is-active { background: #fff; color: var(--indigo-700); box-shadow: var(--shadow-xs); }

.rp-hero { background: linear-gradient(180deg, var(--indigo-50), #fff); padding: 36px 0 8px; }
.rp-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-xl);
  padding: 28px; box-shadow: var(--shadow-sm);
}
.rp-stu { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.rp-stu .avatar { width: 58px; height: 58px; border-radius: 16px; font-size: 20px; }
.rp-stu__name { font-size: 22px; font-weight: 800; color: var(--ink-900); }
.rp-stu__meta { font-size: 14px; color: var(--ink-500); margin-top: 3px; }
.rp-stu__acts { margin-left: auto; display: flex; gap: 10px; }
.rp-switch { margin-left: auto; display: flex; gap: 8px; align-items: center; }
.rp-switch select { height: 40px; padding: 0 12px; border-radius: 10px; border: 1px solid var(--line); font-size: 14px; font-family: inherit; }

.rp-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 22px; margin-top: 22px; }
.rp-grid--3 { grid-template-columns: repeat(3, 1fr); }
.rp-panel { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 24px; }
.rp-panel h3 { font-size: 17px; margin-bottom: 4px; }
.rp-panel__sub { font-size: 13px; color: var(--ink-400); margin-bottom: 20px; }
.rp-panel__head { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; margin-bottom: 18px; }
.rp-panel__head .rp-panel__sub { margin-bottom: 0; }

.radar-wrap { display: grid; place-items: center; padding: 6px 0; }
.legend { display: flex; gap: 18px; justify-content: center; margin-top: 14px; flex-wrap: wrap; }
.legend__i { display: flex; align-items: center; gap: 7px; font-size: 13px; color: var(--ink-700); }
.legend__sw { width: 12px; height: 12px; border-radius: 3px; }

.kp-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.kp-table th {
  text-align: left; font-size: 12px; font-weight: 600; color: var(--ink-400);
  padding: 0 10px 10px; border-bottom: 1px solid var(--line);
}
.kp-table td { padding: 11px 10px; border-bottom: 1px solid var(--line-soft); }
.kp-table tr:last-child td { border-bottom: none; }
.kp-table__name { font-weight: 600; color: var(--ink-800); }
.lv { font-size: 12px; font-weight: 700; padding: 3px 9px; border-radius: 6px; white-space: nowrap; }
.lv--good { color: var(--teal-700); background: var(--teal-100); }
.lv--mid { color: #9A6B12; background: var(--amber-100); }
.lv--bad { color: #B23F38; background: var(--coral-100); }

.bar-cell { display: flex; align-items: center; gap: 10px; min-width: 150px; }
.bar-cell .bar { flex: 1; }
.bar-cell span { font-size: 13px; font-weight: 700; color: var(--ink-700); width: 38px; text-align: right; }

.trend { display: flex; align-items: flex-end; gap: 10px; height: 170px; padding-top: 10px; }
.trend__col { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 8px; height: 100%; justify-content: flex-end; }
.trend__bar {
  width: 100%; max-width: 38px; border-radius: 8px 8px 3px 3px;
  background: linear-gradient(180deg, var(--indigo-500), var(--indigo-700));
  transition: height .9s cubic-bezier(.22,1,.36,1);
}
.trend__col:last-child .trend__bar { background: linear-gradient(180deg, var(--teal-300), var(--teal-600)); }
.trend__v { font-size: 12px; font-weight: 700; color: var(--ink-700); }
.trend__k { font-size: 11px; color: var(--ink-400); }

.advice { display: grid; gap: 14px; }
.advice__i { display: flex; gap: 13px; padding: 16px; border-radius: var(--radius); background: var(--bg-soft); }
.advice__n {
  width: 26px; height: 26px; border-radius: 8px; flex-shrink: 0; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--indigo-600), var(--teal-500)); color: #fff; font-size: 13px; font-weight: 800;
}
.advice__i b { display: block; font-size: 14px; color: var(--ink-900); margin-bottom: 3px; }
.advice__i span { font-size: 13px; color: var(--ink-500); line-height: 1.7; }

.rp-note {
  margin-top: 22px; padding: 16px 18px; border-radius: var(--radius);
  background: var(--amber-100); color: #8A5B0C; font-size: 13px; line-height: 1.7;
  border: 1px dashed rgba(245, 165, 36, .5);
}

.view { display: none; }
.view.is-active { display: block; }

.faq-item { border-bottom: 1px solid var(--line); }
.faq-item__q {
  width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 20px 0; text-align: left; font-size: 16px; font-weight: 600; color: var(--ink-900);
}
.faq-item__q svg { width: 18px; height: 18px; flex-shrink: 0; transition: transform .25s; color: var(--indigo-600); }
.faq-item.is-open .faq-item__q svg { transform: rotate(180deg); }
.faq-item__a { max-height: 0; overflow: hidden; transition: max-height .3s ease; }
.faq-item__a p { font-size: 15px; color: var(--ink-500); padding-bottom: 20px; }

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .hero__grid { grid-template-columns: 1fr; gap: 44px; }
  .hero__stats { gap: 28px; }
  .monitor, .about { grid-template-columns: 1fr; gap: 36px; }
  .ends { grid-template-columns: repeat(2, 1fr); }
  .flow { grid-template-columns: repeat(3, 1fr); gap: 26px 14px; }
  .flow__step:not(:last-child)::after { display: none; }
  .metrics { grid-template-columns: repeat(2, 1fr); }
  .rp-grid, .rp-grid--3 { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 860px) {
  .nav__links { display: none; }
  .nav__cta { display: none; }
  .nav__burger { display: flex; margin-left: auto; }
  .nav.is-open .nav__links {
    display: flex; flex-direction: column; position: absolute; top: var(--nav-h); left: 0; right: 0;
    background: #fff; padding: 14px 24px 20px; border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow); gap: 2px;
  }
  .nav.is-open .nav__links a { padding: 12px 0; font-size: 16px; }
  .nav.is-open .nav__cta { display: flex; position: absolute; top: calc(var(--nav-h) + 210px); left: 24px; right: 24px; }
  .section { padding: 68px 0; }
  .pain-grid, .feat-grid, .plans, .cases { grid-template-columns: 1fr; }
  .flow { grid-template-columns: repeat(2, 1fr); }
  .cta-band { padding: 40px 26px; }
  .hero { padding-top: calc(var(--nav-h) + 44px); }
  .rp-stu__acts { margin-left: 0; width: 100%; }
}

@media (max-width: 560px) {
  .wrap { padding: 0 18px; }
  .ends, .metrics { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr; gap: 30px; }
  .flow { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .hero__stats { gap: 22px; }
  .stat__num { font-size: 26px; }
  .rp-tabs { overflow-x: auto; }
  .rp-tab { white-space: nowrap; padding: 8px 14px; }
  .footer__bottom { flex-direction: column; }
}