/* ==========================================================================
   腾科 PMP® 培训 · SEM 投放落地页
   设计令牌 + 响应式布局
   --------------------------------------------------------------------------
   规格依据（来自《PMP专题页初稿》动效与尺寸规范）：
   PC   : 内容区 1200px / 一级标题 40px / 二级标题 24px / 正文 16px / 行高 ≥1.5
   移动 : 375px 基准(设计稿 750px @2x) / 标题 22px / 小节标题 17px / 正文 14px
   字体 : Microsoft YaHei（系统字体，零字体请求，利于首屏性能）
   ========================================================================== */

/* ---------- 1. 设计令牌 ---------- */
:root {
  /* 品牌蓝：认证/权威感 */
  --c-blue-900: #0B2B50;
  --c-blue-800: #0E3A6B;
  --c-blue-700: #124C8C;
  --c-blue-600: #1B6EC2;
  --c-blue-500: #2E86DE;
  --c-blue-100: #E8F1FB;
  --c-blue-50:  #F4F8FD;

  /* 转化橙：仅用于按钮底色与图形，不用于浅底正文 */
  --c-cta:      #C2410C;   /* 白字对比度 5.05:1，满足 WCAG AA */
  --c-cta-hov:  #9A3412;
  --c-cta-soft: #FFF3EC;

  /* 金：证书/权威点缀，仅小字需用 #8F6517 */
  --c-gold:      #B8862F;
  --c-gold-deep: #8F6517;

  /* 中性 */
  --c-ink:      #14181F;
  --c-ink-2:    #414A59;
  --c-ink-3:    #6B7686;
  --c-ink-4:    #98A2B3;
  --c-line:     #E3E8EF;
  --c-line-2:   #EFF2F7;
  --c-bg:       #F5F7FA;
  --c-white:    #FFFFFF;

  /* 语义 */
  --c-success: #0F7B53;
  --c-success-bg: #E8F6F0;
  --c-danger:  #C0341D;

  /* 圆角 */
  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 16px;
  --r-xl: 22px;

  /* 阴影 */
  --sh-1: 0 1px 2px rgba(11, 43, 80, .05), 0 2px 8px rgba(11, 43, 80, .04);
  --sh-2: 0 4px 12px rgba(11, 43, 80, .07), 0 12px 32px rgba(11, 43, 80, .06);
  --sh-3: 0 12px 28px rgba(11, 43, 80, .12), 0 28px 64px rgba(11, 43, 80, .10);
  --sh-cta: 0 6px 18px rgba(194, 65, 12, .30);

  /* 布局 */
  --container: 1200px;
  --gutter: 20px;
  --sec-y: 72px;

  --ease: cubic-bezier(.4, 0, .2, 1);
}

/* ---------- 2. 基础重置 ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 78px;
}

body {
  margin: 0;
  background: var(--c-bg);
  color: var(--c-ink);
  font-family: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;
  font-size: 14px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;          /* 防止任何子元素造成横向滚动 */
}

img, svg { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, p { margin: 0; }

:focus-visible {
  outline: 3px solid var(--c-blue-500);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ---------- 3. 布局工具 ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.section { padding: var(--sec-y) 0; }
.section--white { background: var(--c-white); }
.section--tint { background: linear-gradient(180deg, var(--c-blue-50) 0%, #FFF 100%); }

.sec-head { text-align: center; margin-bottom: 40px; }
.sec-head__eyebrow {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 13px; font-weight: 700; letter-spacing: .5px;
  color: var(--c-blue-600);
  background: var(--c-blue-100);
  border-radius: 999px;
  padding: 5px 14px;
  margin-bottom: 14px;
}
.sec-head__title {
  font-size: 22px; line-height: 1.4; font-weight: 800; color: var(--c-ink);
  letter-spacing: -.2px;
}
.sec-head__sub {
  margin-top: 12px;
  font-size: 14px; color: var(--c-ink-3);
  max-width: 720px; margin-left: auto; margin-right: auto;
}

/* ---------- 4. 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 48px;                 /* 移动端点击热区 ≥44px */
  padding: 0 26px;
  border: 0; border-radius: var(--r-md);
  font-size: 16px; font-weight: 700; line-height: 1.2;
  cursor: pointer;
  transition: transform .2s var(--ease), box-shadow .2s var(--ease), background-color .2s var(--ease);
  text-align: center;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn--primary {
  background: var(--c-cta); color: #fff;
  box-shadow: var(--sh-cta);
}
.btn--primary:hover { background: var(--c-cta-hov); }

.btn--ghost {
  background: rgba(255, 255, 255, .12);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, .45);
  backdrop-filter: blur(4px);
}
.btn--ghost:hover { background: rgba(255, 255, 255, .2); }

.btn--outline {
  background: var(--c-white); color: var(--c-blue-700);
  border: 1px solid var(--c-blue-600);
  box-shadow: var(--sh-1);
}
.btn--outline:hover { background: var(--c-blue-50); }

.btn--block { width: 100%; }
.btn--sm { min-height: 40px; padding: 0 18px; font-size: 15px; }

/* CTA 静止动效：呼吸光晕 */
.btn--pulse { position: relative; overflow: visible; }
.btn--pulse::after {
  content: "";
  position: absolute; inset: 0;
  border-radius: inherit;
  box-shadow: 0 0 0 0 rgba(194, 65, 12, .45);
  animation: ctaPulse 2.6s var(--ease) infinite;
  pointer-events: none;
}
@keyframes ctaPulse {
  0%   { box-shadow: 0 0 0 0 rgba(194, 65, 12, .42); }
  70%  { box-shadow: 0 0 0 14px rgba(194, 65, 12, 0); }
  100% { box-shadow: 0 0 0 0 rgba(194, 65, 12, 0); }
}

/* ---------- 5. 顶部导航 ---------- */
.header {
  position: sticky; top: 0; z-index: 60;
  background: rgba(255, 255, 255, .94);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--c-line);
}
.header__bar { display: flex; align-items: center; justify-content: space-between; height: 64px; gap: 16px; }
.header__logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.header__logo-mark {
  width: 34px; height: 34px; border-radius: 9px;
  background: linear-gradient(135deg, var(--c-blue-700), var(--c-blue-500));
  color: #fff; font-weight: 800; font-size: 15px;
  display: grid; place-items: center; letter-spacing: -.5px;
}
.header__logo-text { font-size: 16px; font-weight: 800; color: var(--c-ink); line-height: 1.2; }
.header__logo-text small { display: block; font-size: 11px; font-weight: 600; color: var(--c-ink-3); letter-spacing: .3px; }

.header__nav { display: none; }
.header__nav a {
  font-size: 15px; font-weight: 600; color: var(--c-ink-2);
  padding: 6px 0; position: relative; transition: color .2s var(--ease);
}
.header__nav a::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 2px;
  background: var(--c-blue-600); border-radius: 2px;
  transform: scaleX(0); transform-origin: left; transition: transform .25s var(--ease);
}
.header__nav a:hover { color: var(--c-blue-700); }
.header__nav a:hover::after { transform: scaleX(1); }

.header__actions { display: flex; align-items: center; gap: 10px; }
.header__hotline { display: none; text-align: right; line-height: 1.25; }
.header__hotline span { display: block; font-size: 11px; color: var(--c-ink-3); }
.header__hotline a { font-size: 17px; font-weight: 800; color: var(--c-cta); letter-spacing: .3px; }
.header__cta { display: none; }

/* ---------- 6. 首屏 ---------- */
.hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(1100px 460px at 82% -8%, rgba(46, 134, 222, .30) 0%, transparent 62%),
    radial-gradient(760px 380px at 8% 108%, rgba(27, 110, 194, .22) 0%, transparent 60%),
    linear-gradient(160deg, #0B2B50 0%, #0E3A6B 48%, #124C8C 100%);
  color: #fff;
  padding: 44px 0 56px;
  margin-top: -70px;
}
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .045) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(circle at 50% 30%, #000 0%, transparent 78%);
  pointer-events: none;
}
.hero__inner { position: relative; z-index: 1; }

.hero__trust {
  display: flex; flex-wrap: wrap; align-items: center; gap: 8px;
  font-size: 12px; color: #CFE0F5; margin-bottom: 18px;
}
.hero__trust-item {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 4px 11px;
  border: 1px solid rgba(255, 255, 255, .26);
  border-radius: 999px;
  background: rgba(255, 255, 255, .08);
}
.hero__trust-item svg { width: 13px; height: 13px; flex-shrink: 0; }

.hero__title {
  font-size: 22px; line-height: 1.35; font-weight: 800; letter-spacing: -.3px;
  text-wrap: balance;
}
.hero__title em {
  font-style: normal;
  background: linear-gradient(180deg, transparent 62%, rgba(255, 214, 128, .38) 62%);
}
.hero__sub {
  margin-top: 14px;
  font-size: 14px; line-height: 1.8; color: #D6E4F5;
  max-width: 560px;
}
.hero__sub b { color: #FFD680; font-weight: 700; }

.hero__cta { margin-top: 26px; display: flex; flex-direction: column; gap: 12px; }
.hero__cta .btn { width: 100%; }
.hero__note {
  margin-top: 12px; font-size: 12px; color: #A9C4E0;
  display: flex; align-items: center; gap: 6px;
}

.hero__stats {
  margin-top: 34px;
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px;
  background: rgba(255, 255, 255, .16);
  border: 1px solid rgba(255, 255, 255, .16);
  border-radius: var(--r-md);
  overflow: hidden;
}
.hero__stat { background: rgba(9, 32, 62, .55); padding: 16px 10px; text-align: center; }
.hero__stat b { display: block; font-size: 20px; font-weight: 800; color: #FFD680; line-height: 1.25; }
.hero__stat span { font-size: 11.5px; color: #B7CEE8; }

/* 报考指南卡片（首屏下方，点击唤起咨询） */
.guide { margin-top: 34px; }
.guide__label {
  display: flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 700; color: #A9C4E0; margin-bottom: 12px;
}
.guide__label::after { content: ""; flex: 1; height: 1px; background: rgba(255, 255, 255, .16); }
.guide__grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px;
}
.guide__card {
  display: flex; flex-direction: column; align-items: flex-start; gap: 6px;
  padding: 13px 12px;
  background: rgba(255, 255, 255, .09);
  border: 1px solid rgba(255, 255, 255, .18);
  border-radius: var(--r-md);
  cursor: pointer; text-align: left;
  transition: background-color .22s var(--ease), transform .22s var(--ease), border-color .22s var(--ease);
}
.guide__card:hover { background: rgba(255, 255, 255, .17); transform: translateY(-3px); border-color: rgba(255, 214, 128, .55); }
.guide__card-ico {
  width: 26px; height: 26px; border-radius: 7px;
  background: rgba(255, 214, 128, .17); color: #FFD680;
  display: grid; place-items: center; flex-shrink: 0;
}
.guide__card-ico svg { width: 15px; height: 15px; }
.guide__card b { font-size: 13.5px; font-weight: 700; color: #fff; }
.guide__card span { font-size: 11px; color: #A9C4E0; line-height: 1.5; }

/* ---------- 7. 价值模块 ---------- */
.value__grid { display: grid; gap: 14px; }
.value__card {
  background: var(--c-white);
  border: 1px solid var(--c-line);
  border-radius: var(--r-lg);
  padding: 24px 20px;
  position: relative; overflow: hidden;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), border-color .25s var(--ease);
}
.value__card::after {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--c-blue-600), var(--c-blue-500));
  transform: scaleX(0); transform-origin: left; transition: transform .3s var(--ease);
}
.value__card:hover { transform: translateY(-4px); box-shadow: var(--sh-2); border-color: #CFDEF1; }
.value__card:hover::after { transform: scaleX(1); }
.value__ico {
  width: 44px; height: 44px; border-radius: 12px;
  background: var(--c-blue-100); color: var(--c-blue-700);
  display: grid; place-items: center; margin-bottom: 14px;
}
.value__ico svg { width: 22px; height: 22px; }
.value__card h3 { font-size: 16px; font-weight: 800; color: var(--c-ink); margin-bottom: 8px; }
.value__card p { font-size: 13.5px; color: var(--c-ink-2); line-height: 1.75; }
.value__card p b { color: var(--c-blue-700); font-weight: 700; }

.value__split { display: grid; gap: 32px; align-items: center; margin-top: 44px; }
.cert-box {
  background: var(--c-white); border: 1px solid var(--c-line);
  border-radius: var(--r-lg); padding: 18px; box-shadow: var(--sh-1);
}
.cert-box__img { border-radius: var(--r-sm); overflow: hidden; border: 1px solid var(--c-line); }
.cert-box__cap { margin-top: 12px; font-size: 12px; color: var(--c-ink-3); text-align: center; line-height: 1.6; }
.cert-points { display: grid; gap: 12px; }
.cert-points li { display: flex; gap: 10px; font-size: 14px; color: var(--c-ink-2); line-height: 1.7; }
.cert-points svg { width: 18px; height: 18px; flex-shrink: 0; margin-top: 4px; color: var(--c-blue-600); }
.cert-points b { color: var(--c-ink); font-weight: 700; }

/* ---------- 8. 行业 / 岗位分布 ---------- */
.data__tabs { display: flex; gap: 8px; justify-content: center; margin-bottom: 28px; flex-wrap: wrap; }
.data__tab {
  min-height: 44px; padding: 0 18px;
  border: 1px solid var(--c-line); background: var(--c-white);
  border-radius: 999px; font-size: 14px; font-weight: 700; color: var(--c-ink-2);
  cursor: pointer; transition: all .2s var(--ease);
}
.data__tab[aria-selected="true"] { background: var(--c-blue-700); border-color: var(--c-blue-700); color: #fff; }

.data__panel[hidden] { display: none; }
.data__layout { display: grid; gap: 26px; }

.donut-wrap { display: grid; gap: 22px; justify-items: center; }
.donut {
  width: 200px; height: 200px; border-radius: 50%;
  position: relative;
  background: conic-gradient(var(--c-blue-700) 0turn);
}
.donut::after {
  content: ""; position: absolute; inset: 26%;
  background: var(--c-white); border-radius: 50%;
  box-shadow: inset 0 0 0 1px var(--c-line-2);
}
.donut__center {
  position: absolute; inset: 0; z-index: 1;
  display: grid; place-content: center; text-align: center;
}
.donut__center b { font-size: 22px; font-weight: 800; color: var(--c-ink); display: block; line-height: 1.2; }
.donut__center span { font-size: 11px; color: var(--c-ink-3); }

.legend { display: grid; gap: 9px; width: 100%; }
.legend li { display: flex; align-items: center; gap: 9px; font-size: 13.5px; color: var(--c-ink-2); }
.legend i { width: 10px; height: 10px; border-radius: 3px; flex-shrink: 0; }
.legend b { margin-left: auto; font-weight: 700; color: var(--c-ink); font-variant-numeric: tabular-nums; }

.emp { background: var(--c-white); border: 1px solid var(--c-line); border-radius: var(--r-lg); padding: 22px 18px; }
.emp__head { font-size: 14px; font-weight: 800; color: var(--c-ink); margin-bottom: 4px; }
.emp__desc { font-size: 12px; color: var(--c-ink-3); margin-bottom: 18px; }
.emp__row { margin-bottom: 14px; }
.emp__row:last-child { margin-bottom: 0; }
.emp__label { display: flex; justify-content: space-between; font-size: 13px; margin-bottom: 5px; }
.emp__label span { color: var(--c-ink-2); font-weight: 600; }
.emp__label b { color: var(--c-blue-700); font-variant-numeric: tabular-nums; }
.emp__track { height: 8px; background: var(--c-line-2); border-radius: 999px; overflow: hidden; }
.emp__fill {
  display: block; height: 100%; border-radius: 999px;
  background: linear-gradient(90deg, var(--c-blue-700), var(--c-blue-500));
  width: 0; transition: width 1s var(--ease);
}
.emp__fill--alt { background: linear-gradient(90deg, var(--c-gold-deep), var(--c-gold)); }

/* ---------- 9. 测评模块 ---------- */
.assess { background: linear-gradient(165deg, #0B2B50 0%, #103A6C 100%); color: #fff; position: relative; overflow: hidden; }
.assess::before {
  content: ""; position: absolute; right: -120px; top: -120px;
  width: 420px; height: 420px; border-radius: 50%;
  background: radial-gradient(circle, rgba(46, 134, 222, .28), transparent 68%);
}
.assess__layout { display: grid; gap: 30px; align-items: center; position: relative; z-index: 1; }
.assess__intro h2 { font-size: 22px; font-weight: 800; line-height: 1.4; }
.assess__intro p { margin-top: 14px; font-size: 14px; color: #C4D8EE; line-height: 1.8; }
.assess__steps { margin-top: 22px; display: grid; gap: 10px; }
.assess__step { display: flex; gap: 10px; align-items: flex-start; font-size: 13.5px; color: #D6E4F5; }
.assess__step-num {
  flex-shrink: 0; width: 22px; height: 22px; border-radius: 50%;
  background: rgba(255, 255, 255, .14); border: 1px solid rgba(255, 255, 255, .3);
  color: #FFD680; font-size: 11.5px; font-weight: 800;
  display: grid; place-items: center;
}
.assess__cta { margin-top: 26px; }

.quiz {
  background: var(--c-white); border-radius: var(--r-xl);
  box-shadow: var(--sh-3); overflow: hidden; color: var(--c-ink);
}
.quiz__top {
  background: linear-gradient(135deg, var(--c-blue-700), var(--c-blue-600));
  padding: 12px 16px; display: flex; align-items: center; gap: 8px;
  color: #fff; font-size: 13px; font-weight: 700;
}
.quiz__top-dots { margin-left: auto; display: flex; gap: 5px; }
.quiz__top-dots i { width: 8px; height: 8px; border-radius: 50%; background: rgba(255, 255, 255, .38); }
.quiz__top-dots i:first-child { background: #FFD680; }
.quiz__body { padding: 22px 18px; min-height: 232px; display: flex; flex-direction: column; }
.quiz__q { font-size: 15px; font-weight: 700; line-height: 1.6; }
.quiz__opts { margin-top: 16px; display: grid; gap: 9px; }
.quiz__opt {
  display: flex; align-items: center; gap: 10px;
  min-height: 46px; padding: 10px 13px;
  border: 1px solid var(--c-line); border-radius: var(--r-md);
  background: #fff; cursor: pointer; text-align: left; font-size: 14px;
  transition: all .2s var(--ease);
}
.quiz__opt:hover { border-color: var(--c-blue-500); background: var(--c-blue-50); }
.quiz__opt[aria-pressed="true"] { border-color: var(--c-blue-600); background: var(--c-blue-100); font-weight: 700; }
.quiz__opt i {
  width: 17px; height: 17px; border-radius: 50%; border: 2px solid var(--c-line);
  flex-shrink: 0; position: relative;
}
.quiz__opt[aria-pressed="true"] i { border-color: var(--c-blue-600); }
.quiz__opt[aria-pressed="true"] i::after {
  content: ""; position: absolute; inset: 3px; border-radius: 50%; background: var(--c-blue-600);
}
.quiz__progress { height: 3px; background: var(--c-line-2); }
.quiz__progress i { display: block; height: 100%; width: 25%; background: var(--c-blue-600); transition: width .4s var(--ease); }
.quiz__result { text-align: center; padding: 6px 0; }
.quiz__badge {
  width: 54px; height: 54px; border-radius: 50%; margin: 0 auto 14px;
  display: grid; place-items: center;
  background: var(--c-success-bg); color: var(--c-success);
}
.quiz__badge svg { width: 28px; height: 28px; }
.quiz__badge--warn { background: var(--c-cta-soft); color: var(--c-cta); }
.quiz__result h4 { font-size: 17px; font-weight: 800; margin-bottom: 8px; }
.quiz__result p { font-size: 13.5px; color: var(--c-ink-2); line-height: 1.75; margin-bottom: 18px; }

/* 测评结果 · 验证码表单 */
.quiz__verify { text-align: left; padding: 4px 0; }
.quiz__verify-title { text-align: center; font-size: 17px; font-weight: 800; margin-bottom: 6px; }
.quiz__verify-desc { text-align: center; font-size: 13px; color: var(--c-ink-2); line-height: 1.7; margin-bottom: 18px; }
.quiz__verify .field { margin-bottom: 14px; display: flex; flex-direction: column; }
.quiz__verify .field__label { display: block; font-size: 13px; font-weight: 700; color: var(--c-ink-2); margin-bottom: 7px; }
.quiz__verify input {
  width: 100%; min-height: 46px; padding: 11px 13px;
  border: 1px solid var(--c-line); border-radius: var(--r-md);
  background: #FCFDFE; font-size: 15px;
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
  outline: none;
}
.quiz__verify input:focus {
  border-color: var(--c-blue-600); box-shadow: 0 0 0 3px rgba(27, 110, 194, .14);
  background: #fff;
}
.quiz__verify .field--err input { border-color: var(--c-danger); background: #FEF7F5; }
.quiz__verify .field__err { display: none; margin-top: 5px; font-size: 12px; color: var(--c-danger); }
.quiz__verify .field--err .field__err { display: block; }

/* 验证码输入行：input + 右侧按钮 */
.quiz__verify-row { display: flex; gap: 10px; align-items: stretch; position: relative;}
.quiz__verify-row input { flex: 1; min-width: 0; }
.quiz__verify-code-btn {
  flex-shrink: 0; min-width: 110px; padding: 0 14px;
  border: 1px solid var(--c-blue-600); border-radius: var(--r-md);
  background: var(--c-white); color: var(--c-blue-600);
  font-size: 13px; font-weight: 700; cursor: pointer;
  transition: all .2s var(--ease);
}
.quiz__verify-code-btn:hover:not(:disabled) {
  background: var(--c-blue-50); border-color: var(--c-blue-700); color: var(--c-blue-700);
}
.quiz__verify-code-btn:disabled {
  border-color: var(--c-line); background: #F2F4F7; color: var(--c-ink-4); cursor: not-allowed;
}
#quiz__verify-code-span{
	width: 30%;
	height: 1px;
	position: absolute;
	top: 0;
	right: 0;
}
.quiz__verify-submit { margin-top: 6px; position: relative; }
.quiz__verify-submit.is-loading { pointer-events: none; opacity: .85; }
.quiz__verify-submit.is-loading span { visibility: hidden; }
.quiz__verify-submit.is-loading::after {
  content: ""; position: absolute; left: 50%; top: 50%;
  width: 16px; height: 16px; margin: -8px 0 0 -8px;
  border: 2px solid rgba(255,255,255,.45); border-top-color: #fff;
  border-radius: 50%; animation: qvSpin .7s linear infinite;
}
@keyframes qvSpin { to { transform: rotate(360deg); } }

/* ---------- 10. 优势模块 ---------- */
.adv { display: grid; gap: 14px; }
.adv__item {
  background: var(--c-white); border: 1px solid var(--c-line);
  border-radius: var(--r-lg); padding: 22px 20px;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease);
}
.adv__item:hover { transform: translateY(-4px); box-shadow: var(--sh-2); }
.adv__top { display: flex; align-items: center; gap: 12px; margin-bottom: 10px; }
.adv__ico {
  width: 40px; height: 40px; border-radius: 11px; flex-shrink: 0;
  background: linear-gradient(135deg, var(--c-blue-700), var(--c-blue-500));
  color: #fff; display: grid; place-items: center;
}
.adv__ico svg { width: 20px; height: 20px; }
.adv__top h3 { font-size: 16px; font-weight: 800; }
.adv__item p { font-size: 13.5px; color: var(--c-ink-2); line-height: 1.78; }
.adv__item p b { color: var(--c-ink); font-weight: 700; }

/* ---------- 11. 师资模块 ---------- */
.teacher { background: var(--c-white); }
.teacher__layout { display: grid; gap: 30px; align-items: center; }
.teacher__photo {
  position: relative; border-radius: var(--r-lg); overflow: hidden;
  background: linear-gradient(160deg, #EDF2F8, #DCE6F2);
  box-shadow: var(--sh-2);
}
.teacher__photo img { width: 100%; height: auto; }
.teacher__photo-tag {
  position: absolute; left: 14px; bottom: 14px;
  background: rgba(11, 43, 80, .88); color: #fff;
  padding: 7px 14px; border-radius: 999px;
  font-size: 12px; font-weight: 700; backdrop-filter: blur(4px);
}
.teacher__name { font-size: 22px; font-weight: 800; margin-bottom: 4px; }
.teacher__role { font-size: 14px; color: var(--c-blue-600); font-weight: 700; margin-bottom: 14px; }
.teacher__desc { font-size: 13.5px; color: var(--c-ink-2); line-height: 1.8; margin-bottom: 18px; }
.teacher__tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 22px; }
.teacher__tags li {
  font-size: 12.5px; font-weight: 600; color: var(--c-blue-700);
  background: var(--c-blue-50); border: 1px solid #D8E6F7;
  padding: 5px 12px; border-radius: 999px;
}
.teacher__cta { display: flex; flex-direction: column; gap: 10px; }

/* ---------- 12. 课程大纲 ---------- */
.syl__stage { background: var(--c-white); border: 1px solid var(--c-line); border-radius: var(--r-lg); overflow: hidden; }
.syl__stage + .syl__stage { margin-top: 12px; }
.syl__stage summary {
  display: flex; align-items: center; gap: 12px;
  padding: 16px 18px; cursor: pointer; list-style: none;
  font-size: 15px; font-weight: 700; color: var(--c-ink);
  transition: background-color .2s var(--ease);
}
.syl__stage summary::-webkit-details-marker { display: none; }
.syl__stage summary:hover { background: var(--c-blue-50); }
.syl__stage summary::after {
  content: ""; margin-left: auto; width: 9px; height: 9px; flex-shrink: 0;
  border-right: 2px solid var(--c-ink-3); border-bottom: 2px solid var(--c-ink-3);
  transform: rotate(45deg) translateY(-2px);
  transition: transform .25s var(--ease);
}
.syl__stage[open] summary::after { transform: rotate(-135deg) translateY(-2px); }
.syl__no {
  flex-shrink: 0; width: 30px; height: 30px; border-radius: 9px;
  background: var(--c-blue-100); color: var(--c-blue-700);
  font-size: 12px; font-weight: 800; display: grid; place-items: center;
}
.syl__body { padding: 0 18px 18px; }
.syl__body > p { font-size: 13px; color: var(--c-ink-3); margin-bottom: 12px; }
.syl__group { border-left: 2px solid var(--c-line); padding-left: 14px; margin-bottom: 14px; }
.syl__group:last-child { margin-bottom: 0; }
.syl__group h4 { font-size: 13.5px; font-weight: 800; color: var(--c-blue-700); margin-bottom: 7px; }
.syl__group li { font-size: 13px; color: var(--c-ink-2); line-height: 1.85; position: relative; padding-left: 12px; }
.syl__group li::before { content: ""; position: absolute; left: 0; top: 11px; width: 4px; height: 4px; border-radius: 50%; background: var(--c-ink-4); }
.syl__group li b { color: var(--c-ink); font-weight: 700; }

/* ---------- 13. 资料 + 表单 ---------- */
.form-wrap { display: grid; gap: 28px; align-items: start; }
.lead {
  background: var(--c-white); border-radius: var(--r-xl);
  border: 1px solid var(--c-line);
  box-shadow: var(--sh-2); padding: 24px 20px;
}
.lead__head { margin-bottom: 18px; }
.lead__title { font-size: 18px; font-weight: 800; line-height: 1.4; }
.lead__desc { margin-top: 8px; font-size: 13px; color: var(--c-ink-3); line-height: 1.7; }
.field { margin-bottom: 14px; }
.field__label { display: block; font-size: 13px; font-weight: 700; color: var(--c-ink-2); margin-bottom: 7px; }
.field__label i { color: var(--c-danger); font-style: normal; }
.field input, .field select {
  width: 100%; min-height: 46px; padding: 11px 13px;
  border: 1px solid var(--c-line); border-radius: var(--r-md);
  background: #FCFDFE; font-size: 15px;      /* ≥16px 可避免 iOS 聚焦缩放，这里取 15px 兼顾密度 */
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.field input:focus, .field select:focus {
  outline: none; border-color: var(--c-blue-600); box-shadow: 0 0 0 3px rgba(27, 110, 194, .14);
  background: #fff;
}
.field select { appearance: none; background-image: url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 8'%3E%3Cpath d='M1 1.5 6 6.5 11 1.5' stroke='%236B7686' stroke-width='1.8' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 13px center; background-size: 12px; padding-right: 34px; }
.field--err input, .field--err select { border-color: var(--c-danger); background: #FEF7F5; }
.field__err { display: none; margin-top: 5px; font-size: 12px; color: var(--c-danger); }
.field--err .field__err { display: block; }
.lead__agree { display: flex; gap: 8px; align-items: flex-start; font-size: 12px; color: var(--c-ink-3); line-height: 1.6; margin: 4px 0 16px; }
.lead__agree input { width: 16px; height: 16px; margin: 2px 0 0; flex-shrink: 0; accent-color: var(--c-blue-700); }
.lead__agree a { color: var(--c-blue-700); text-decoration: underline; }
.lead__submit { min-height: 52px; font-size: 16px; }
.lead__tip { margin-top: 12px; font-size: 12px; color: var(--c-ink-4); text-align: center; }
.lead__ok { display: none; text-align: center; padding: 18px 0; }
.lead__ok svg { width: 52px; height: 52px; margin: 0 auto 14px; color: var(--c-success); }
.lead__ok b { display: block; font-size: 17px; font-weight: 800; margin-bottom: 8px; }
.lead__ok p { font-size: 13.5px; color: var(--c-ink-3); line-height: 1.75; }
.lead.is-done .lead__form { display: none; }
.lead.is-done .lead__ok { display: block; }

.material__list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin-bottom: 24px; }
.material__item {
  display: flex; align-items: center; gap: 11px;
  background: var(--c-white); border: 1px solid var(--c-line);
  border-radius: var(--r-md); padding: 14px 14px;
  transition: transform .2s var(--ease), box-shadow .2s var(--ease), border-color .2s var(--ease);
}
.material__item:hover { transform: translateY(-3px); box-shadow: var(--sh-1); border-color: #CFDEF1; }
.material__ico {
  width: 36px; height: 36px; border-radius: 10px; flex-shrink: 0;
  background: var(--c-cta-soft); color: var(--c-cta);
  display: grid; place-items: center;
}
.material__ico svg { width: 18px; height: 18px; }
.material__item b { font-size: 13.5px; font-weight: 700; display: block; }
.material__item span { font-size: 11.5px; color: var(--c-ink-3); }

.badge-strip { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-top: 22px; }
.badge-strip__item {
  display: inline-flex; align-items: center; gap: 7px;
  background: var(--c-white); border: 1px solid var(--c-line);
  border-radius: 999px; padding: 8px 16px;
  font-size: 13px; font-weight: 700; color: var(--c-ink-2);
}
.badge-strip__item svg { width: 15px; height: 15px; color: var(--c-blue-600); }

/* ---------- 14. FAQ ---------- */
.faq { display: grid; gap: 10px; max-width: 860px; margin: 0 auto; }
.faq__item { background: var(--c-white); border: 1px solid var(--c-line); border-radius: var(--r-md); overflow: hidden; }
.faq__item summary {
  list-style: none; cursor: pointer;
  padding: 15px 44px 15px 18px; position: relative;
  font-size: 14.5px; font-weight: 700; color: var(--c-ink); line-height: 1.6;
}
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary::after {
  content: ""; position: absolute; right: 18px; top: 50%;
  width: 9px; height: 9px; margin-top: -6px;
  border-right: 2px solid var(--c-blue-600); border-bottom: 2px solid var(--c-blue-600);
  transform: rotate(45deg); transition: transform .25s var(--ease);
}
.faq__item[open] summary::after { transform: rotate(-135deg); margin-top: -2px; }
.faq__item[open] summary { color: var(--c-blue-700); background: var(--c-blue-50); }
.faq__body { padding: 0 18px 16px; font-size: 13.5px; color: var(--c-ink-2); line-height: 1.8; }

/* ---------- 15. 底部 CTA + 页脚 ---------- */
.final {
  background:
    radial-gradient(700px 300px at 50% 0%, rgba(46, 134, 222, .28), transparent 65%),
    linear-gradient(150deg, #0B2B50, #0E3A6B);
  color: #fff; text-align: center;
}
.final__title { font-size: 22px; font-weight: 800; line-height: 1.45; }
.final__sub { margin: 14px auto 0; font-size: 14px; color: #C4D8EE; max-width: 560px; }
.final__cta { margin: 28px auto 0; display: flex; flex-direction: column; gap: 12px; max-width: 420px; }
.final__cta .btn { width: 100%; }
.final__slogan {
  margin-top: 26px; padding-top: 20px; border-top: 1px solid rgba(255, 255, 255, .14);
  font-size: 13.5px; color: #FFD680; font-weight: 700; letter-spacing: .5px;
}

.footer { background: #071D38; color: #8FA9C6; padding: 40px 0 24px; font-size: 12.5px; }
.footer__grid { display: grid; gap: 26px; }
.footer__col h4 { font-size: 13.5px; color: #fff; font-weight: 700; margin-bottom: 12px; }
.footer__col li { margin-bottom: 7px; }
.footer__col a { color: #8FA9C6; transition: color .2s var(--ease); }
.footer__col a:hover { color: #FFD680; }
.footer__brand p { margin-top: 12px; line-height: 1.8; max-width: 340px; }
.footer__bottom {
  margin-top: 26px; padding-top: 18px; border-top: 1px solid rgba(255, 255, 255, .1);
  display: flex; flex-direction: column; gap: 8px; text-align: center;
  font-size: 12px; color: #6D86A3;
}
.footer__bottom a { color: #6D86A3; }

/* ---------- 16. 移动端吸底 CTA ---------- */
.dock {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 55;
  display: flex; gap: 8px; padding: 8px 12px calc(8px + env(safe-area-inset-bottom));
  background: rgba(255, 255, 255, .97);
  border-top: 1px solid var(--c-line);
  backdrop-filter: blur(10px);
  transform: translateY(110%);
  transition: transform .3s var(--ease);
}
.dock.is-on { transform: translateY(0); }
.dock__btn { flex: 1; min-height: 46px; border-radius: var(--r-md); font-size: 14.5px; font-weight: 700; }
.dock__btn--ghost { border: 1px solid var(--c-blue-600); color: var(--c-blue-700); background: #fff; }

/* ---------- 17. 咨询弹窗 ---------- */
.modal {
  position: fixed; inset: 0; z-index: 90;
  display: none; align-items: flex-end; justify-content: center;
  background: rgba(8, 20, 38, .58);
  backdrop-filter: blur(3px);
  padding: 0;
}
.modal.is-open { display: flex; }
.modal__panel {
  width: 100%; max-width: 520px;
  background: #fff; border-radius: var(--r-xl) var(--r-xl) 0 0;
  padding: 22px 18px calc(22px + env(safe-area-inset-bottom));
  max-height: 92vh; overflow-y: auto;
  animation: sheetUp .3s var(--ease);
}
@keyframes sheetUp { from { transform: translateY(24px); opacity: .4; } to { transform: translateY(0); opacity: 1; } }
.modal__head { display: flex; align-items: flex-start; gap: 12px; margin-bottom: 16px; }
.modal__head h3 { font-size: 17px; font-weight: 800; line-height: 1.4; }
.modal__head p { font-size: 12.5px; color: var(--c-ink-3); margin-top: 4px; }
.modal__close {
  margin-left: auto; flex-shrink: 0;
  width: 32px; height: 32px; border-radius: 50%;
  border: 1px solid var(--c-line); background: #fff;
  cursor: pointer; display: grid; place-items: center; color: var(--c-ink-3);
}
.modal__close svg { width: 14px; height: 14px; }
.modal__body { font-size: 13.5px; color: var(--c-ink-2); line-height: 1.8; }
.modal__body p { margin-bottom: 10px; }
.modal__body ul { margin: 0 0 14px; }
.modal__body li { position: relative; padding-left: 14px; margin-bottom: 5px; }
.modal__body li::before { content: ""; position: absolute; left: 2px; top: 11px; width: 4px; height: 4px; border-radius: 50%; background: var(--c-blue-600); }
.modal__form { margin-top: 16px; }
body.modal-open { overflow: hidden; }

/* ---------- 18. 入场动画 ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s var(--ease), transform .6s var(--ease); }
.reveal.is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}

/* ---------- 19. 断点：平板 ---------- */
@media (min-width: 768px) {
  :root { --gutter: 32px; --sec-y: 88px; }
  body { font-size: 16px; line-height: 1.7; }
  .hero { padding: 70px 0 84px; }
  .hero__title { font-size: 34px; }
  .hero__sub { font-size: 16px; }
  .hero__cta { flex-direction: row; }
  .hero__cta .btn { width: auto; min-width: 210px; }
  .hero__stats { grid-template-columns: repeat(4, 1fr); }
  .hero__stat b { font-size: 26px; }
  .hero__stat span { font-size: 13px; }
  .guide__grid { grid-template-columns: repeat(5, 1fr); gap: 12px; }
  .sec-head__title { font-size: 32px; }
  .sec-head__sub { font-size: 16px; }
  .value__grid { grid-template-columns: repeat(3, 1fr); gap: 20px; }
  .value__card { padding: 30px 26px; }
  .value__card h3 { font-size: 18px; }
  .value__card p { font-size: 14.5px; }
  .adv { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .adv__item { padding: 26px 24px; }
  .adv__top h3 { font-size: 17px; }
  .adv__item p { font-size: 14.5px; }
  .teacher__name { font-size: 26px; }
  .teacher__desc { font-size: 14.5px; }
  .teacher__cta { flex-direction: row; }
  .syl__stage summary { font-size: 16px; padding: 18px 22px; }
  .syl__group li { font-size: 14px; }
  .material__list { grid-template-columns: repeat(3, 1fr); gap: 14px; }
  .lead { padding: 30px 28px; }
  .lead__title { font-size: 20px; }
  .final__title { font-size: 32px; }
  .final__sub { font-size: 16px; }
  .final__cta { flex-direction: row; justify-content: center; }
  .final__cta .btn { width: auto; min-width: 220px; }
  .footer__grid { grid-template-columns: 1.4fr 1fr 1fr 1fr; }
  .footer__bottom { flex-direction: row; justify-content: space-between; text-align: left; }
  .modal { align-items: center; padding: 20px; }
  .modal__panel { border-radius: var(--r-xl); max-width: 560px; }
  .field input, .field select { font-size: 16px; }
  .dock { display: none; }
}

/* ---------- 20. 断点：桌面 ---------- */
@media (min-width: 1024px) {
  .header__nav { display: flex; gap: 28px; }
  .header__hotline { display: block; }
  .header__cta { display: inline-flex; }
  .guide__grid { grid-template-columns: repeat(7, 1fr); }
  .value__grid { grid-template-columns: repeat(3, 1fr); }
  .value__split { grid-template-columns: 460px 1fr; gap: 48px; }
  .data__layout { grid-template-columns: 1fr 1.15fr; gap: 36px; }
  .donut-wrap { grid-template-columns: auto 1fr; gap: 34px; justify-items: start; align-items: center; }
  .assess__layout { grid-template-columns: 1fr 460px; gap: 56px; }
  .adv { grid-template-columns: repeat(3, 1fr); gap: 20px; }
  .teacher__layout { grid-template-columns: 400px 1fr; gap: 52px; }
  .form-wrap { grid-template-columns: 1fr 420px; gap: 44px; }
  .form-wrap .lead { position: sticky; top: 88px; }
}

/* ---------- 21. 断点：超宽 ---------- */
@media (min-width: 1280px) {
  .hero { padding: 84px 0 96px; }
  .hero__title { font-size: 40px; }
  /* 标题副句在宽屏单独成行，避免"培训0基础"连排 */
  .hero__title br { display: block; }
}