/* ===========================================================
   培森题库 · 落地页
   =========================================================== */

.wrap { max-width: 1180px; margin: 0 auto; padding: 0 24px; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  padding: 64px 0 40px;
  background:
    radial-gradient(900px 420px at 18% 0%, #e6f8f5 0%, rgba(230, 248, 245, 0) 62%),
    radial-gradient(760px 400px at 88% 4%, #eef1ff 0%, rgba(238, 241, 255, 0) 60%),
    linear-gradient(#fbfefe, #f7fbfb);
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(16, 179, 163, .055) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(16, 179, 163, .055) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(70% 55% at 50% 20%, #000 20%, transparent 100%);
  -webkit-mask-image: radial-gradient(70% 55% at 50% 20%, #000 20%, transparent 100%);
  pointer-events: none;
}
.hero .wrap { position: relative; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 32px;
  padding: 0 15px;
  border-radius: 999px;
  background: #fff;
  border: 1px solid #d6efec;
  color: var(--pri-dd);
  font-size: 13px;
  font-weight: 500;
  box-shadow: 0 2px 10px rgba(16, 179, 163, .08);
}

.hero h1 {
  font-size: 52px;
  line-height: 1.22;
  letter-spacing: -1px;
  margin: 22px 0 16px;
  font-weight: 800;
  color: #12232b;
}
.hero h1 .hl {
  background: linear-gradient(98deg, #0a7a71 4%, #176d92 96%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero .lead {
  font-size: 17px;
  color: var(--ink-2);
  max-width: 640px;
  margin: 0 0 28px;
  line-height: 1.85;
}
.hero-actions { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.hero-note {
  margin-top: 18px;
  font-size: 13px;
  color: var(--muted);
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}
.hero-note span { display: inline-flex; align-items: center; gap: 6px; }
.hero-note svg { width: 14px; height: 14px; color: var(--pri); }

/* ---------- 应用预览 ---------- */
.preview {
  margin: 46px auto 0;
  max-width: 1060px;
  border-radius: 20px;
  background: #fff;
  border: 1px solid #e4edef;
  box-shadow: 0 30px 80px -28px rgba(15, 58, 66, .28), 0 2px 10px rgba(15, 58, 66, .05);
  overflow: hidden;
}
.preview-bar {
  height: 40px;
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 0 14px;
  background: #fbfdfd;
  border-bottom: 1px solid #eef4f5;
}
.preview-bar i { width: 9px; height: 9px; border-radius: 50%; background: #e3ebed; }
.preview-bar .addr {
  margin-left: 12px;
  height: 22px;
  flex: 1;
  max-width: 320px;
  border-radius: 6px;
  background: #f1f7f8;
  font-size: 11px;
  color: var(--muted);
  display: flex;
  align-items: center;
  padding: 0 10px;
  font-family: var(--mono);
}
.preview-body { display: grid; grid-template-columns: 168px 1fr 214px; min-height: 342px; }

.pv-side { border-right: 1px solid #eef4f5; padding: 12px 10px; background: #fcfefe; }
.pv-side .grp { font-size: 11px; color: var(--muted); margin: 10px 6px 6px; letter-spacing: .4px; }
.pv-item {
  display: flex; align-items: center; gap: 7px;
  padding: 6px 8px; border-radius: 7px; font-size: 12.5px; color: var(--ink-2);
}
.pv-item.on { background: var(--pri-l); color: var(--pri-dd); font-weight: 600; }
.pv-item .ic { width: 13px; height: 13px; border-radius: 3px; background: #dfe9eb; }
.pv-item.on .ic { background: #8fdcd4; }

.pv-main { padding: 14px 16px; background: #fff; }
.pv-toolbar { display: flex; gap: 6px; margin-bottom: 12px; flex-wrap: wrap; }
.pv-chip {
  height: 22px; padding: 0 9px; border-radius: 6px; background: #f3f8f9;
  font-size: 11px; color: var(--ink-2); display: inline-flex; align-items: center;
}
.pv-chip.on { background: var(--pri); color: #fff; }
.pv-q {
  border: 1px solid #eef4f5; border-radius: 10px; padding: 10px 12px; margin-bottom: 9px;
  font-size: 12.5px; color: #24363d; line-height: 1.7;
}
.pv-q .hd { display: flex; gap: 6px; margin-bottom: 5px; }
.pv-badge { font-size: 10px; padding: 1px 6px; border-radius: 4px; background: #eef1ff; color: #5b66d6; }
.pv-badge.d2 { background: #e9f8f6; color: var(--pri-dd); }

.pv-right { border-left: 1px solid #eef4f5; padding: 12px; background: #fcfefe; display: flex; flex-direction: column; gap: 8px; }
.pv-act {
  height: 30px; border-radius: 8px; background: #fff; border: 1px solid #e7eff0;
  display: flex; align-items: center; justify-content: center; font-size: 12px; color: var(--ink-2);
}
.pv-act.pri { background: var(--pri); border-color: var(--pri); color: #fff; }

/* ---------- 通用章节 ---------- */
.section { padding: 76px 0; }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 44px; }
.section-head .kicker {
  font-size: 13px; color: var(--pri-dd); font-weight: 600; letter-spacing: 1.4px;
  text-transform: uppercase;
}
.section-head h2 { font-size: 34px; margin: 12px 0 12px; letter-spacing: -.6px; font-weight: 800; }
.section-head p { color: var(--ink-2); font-size: 15.5px; margin: 0; }

/* ---------- 功能三卡 ---------- */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.fcard {
  background: #fff; border: 1px solid var(--line); border-radius: var(--r-l);
  padding: 26px 24px; transition: .22s; position: relative; overflow: hidden;
}
.fcard:hover { transform: translateY(-3px); box-shadow: var(--sh-m); border-color: #d9ebea; }
.fcard .fi {
  width: 44px; height: 44px; border-radius: 13px; display: grid; place-items: center;
  background: var(--pri-l); color: var(--pri-dd); margin-bottom: 16px;
}
.fcard .fi svg { width: 22px; height: 22px; }
.fcard h3 { font-size: 17.5px; margin: 0 0 8px; }
.fcard p { font-size: 14px; color: var(--ink-2); margin: 0; line-height: 1.8; }
.fcard ul { margin: 14px 0 0; padding: 0; list-style: none; }
.fcard li { font-size: 13px; color: var(--muted); padding-left: 16px; position: relative; margin-bottom: 5px; }
.fcard li::before { content: ""; position: absolute; left: 0; top: 8px; width: 6px; height: 6px; border-radius: 2px; background: #b6e6e0; }

/* ---------- 流程 ---------- */
.flow {
  display: flex; align-items: center; justify-content: center; gap: 8px; flex-wrap: wrap;
  margin-top: 10px;
}
.flow-step {
  background: #fff; border: 1px solid var(--line); border-radius: 16px;
  padding: 20px 26px; text-align: center; min-width: 150px; box-shadow: var(--sh-s);
}
.flow-step b { display: block; font-size: 15.5px; margin-bottom: 4px; }
.flow-step span { font-size: 12.5px; color: var(--muted); }
.flow-step em {
  font-style: normal; display: inline-grid; place-items: center;
  width: 22px; height: 22px; border-radius: 7px; background: var(--pri-l); color: var(--pri-dd);
  font-size: 12px; font-weight: 700; margin-bottom: 8px;
}
.flow-arrow { color: #cfe0e2; font-size: 20px; }

/* ---------- 数据条 ---------- */
.strip {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px;
  background: var(--line); border: 1px solid var(--line); border-radius: var(--r-l); overflow: hidden;
}
.strip div { background: #fff; padding: 26px 20px; text-align: center; }
.strip b { display: block; font-size: 26px; letter-spacing: -.5px; color: var(--pri-dd); }
.strip span { font-size: 13px; color: var(--muted); }

/* ---------- 工具箱 ---------- */
.tools-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.tool-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--r-m);
  padding: 18px; display: block; transition: .2s; position: relative;
}
.tool-card:hover { border-color: #cfeae6; box-shadow: var(--sh-m); transform: translateY(-2px); }
.tool-card h4 { margin: 0 0 6px; font-size: 14.5px; display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.tool-card p { margin: 0; font-size: 12.5px; color: var(--muted); line-height: 1.7; }
.tool-card .badge {
  font-size: 10.5px; font-weight: 600; color: #0e8f60; background: #e7f7ef;
  padding: 2px 7px; border-radius: 5px; flex-shrink: 0;
}
.tool-card .badge.soon { color: #9a7614; background: #fdf4dc; }
.tool-card.disabled { opacity: .72; cursor: default; }

/* ---------- 教程 ---------- */
.steps { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.step {
  display: flex; gap: 16px; background: #fff; border: 1px solid var(--line);
  border-radius: var(--r-m); padding: 20px;
}
.step .n {
  flex-shrink: 0; width: 38px; height: 38px; border-radius: 11px;
  background: linear-gradient(135deg, #e9f8f6, #eef1ff); color: var(--pri-dd);
  display: grid; place-items: center; font-weight: 800; font-size: 15px;
}
.step b { font-size: 15px; display: block; margin-bottom: 4px; }
.step p { margin: 0; font-size: 13.5px; color: var(--ink-2); line-height: 1.75; }

/* ---------- 试用 / 联系 ---------- */
.cta {
  background: linear-gradient(135deg, #0e3b3c 0%, #0a5551 55%, #08706a 100%);
  border-radius: 26px;
  padding: 52px 48px;
  color: #fff;
  display: grid;
  grid-template-columns: 1.15fr 300px;
  gap: 44px;
  align-items: center;
  position: relative;
  overflow: hidden;
}
.cta::after {
  content: "";
  position: absolute;
  width: 520px; height: 520px; border-radius: 50%;
  background: radial-gradient(circle, rgba(70, 230, 210, .22), transparent 65%);
  right: -140px; top: -220px;
}
.cta h2 { font-size: 32px; margin: 0 0 12px; letter-spacing: -.5px; }
.cta p { color: rgba(255, 255, 255, .78); margin: 0 0 22px; font-size: 15px; line-height: 1.85; }
.cta .btn-pri { background: #fff; color: #0a5551; border-color: #fff; box-shadow: none; font-weight: 600; }
.cta .btn-pri:hover { background: #eaf7f5; color: #073f3b; }
.cta .btn-ghost { color: #fff; border-color: rgba(255, 255, 255, .3); }
.cta .btn-ghost:hover { background: rgba(255, 255, 255, .1); }
.cta-qr {
  background: #fff; border-radius: 18px; padding: 14px; text-align: center;
  position: relative; z-index: 1;
}
.cta-qr img { border-radius: 10px; width: 100%; }
.cta-qr .who { font-size: 13.5px; font-weight: 600; color: var(--ink); margin-bottom: 8px; }
.cta-qr .tip { font-size: 11.5px; color: var(--muted); margin-top: 8px; }
.contact-row {
  margin-top: 22px; display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
}
.phone-box {
  display: inline-flex; align-items: center; gap: 10px;
  background: rgba(255, 255, 255, .1);
  border: 1px solid rgba(255, 255, 255, .22);
  padding: 8px 8px 8px 16px; border-radius: 12px; cursor: pointer;
  transition: .18s;
}
.phone-box:hover { background: rgba(255, 255, 255, .17); }
.phone-box .n { font-family: var(--mono); font-size: 15.5px; font-weight: 600; letter-spacing: .5px; }
.phone-box .c {
  background: rgba(255, 255, 255, .92); color: #0a5551; border-radius: 8px;
  padding: 4px 10px; font-size: 12px; font-weight: 600;
}

/* ---------- 公告 ---------- */
.notice {
  max-width: 1180px; margin: 0 auto;
  background: var(--warn-l); border: 1px solid #f6e2c0; color: #8a5b12;
  padding: 10px 16px; border-radius: 10px; font-size: 13.5px;
  display: flex; gap: 8px; align-items: center;
  margin-top: 16px;
}

@media (max-width: 1000px) {
  .hero h1 { font-size: 38px; }
  .feature-grid, .tools-grid, .steps { grid-template-columns: 1fr 1fr; }
  .cta { grid-template-columns: 1fr; padding: 34px 26px; }
  .strip { grid-template-columns: 1fr 1fr; }
  .preview-body { grid-template-columns: 1fr; }
  .pv-side, .pv-right { display: none; }
}
@media (max-width: 640px) {
  .hero { padding: 34px 0 20px; }
  .hero h1 { font-size: 29px; }
  .section { padding: 48px 0; }
  .section-head h2 { font-size: 25px; }
  .feature-grid, .tools-grid, .steps { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; gap: 22px; }
  .flow-step { min-width: 120px; padding: 14px 16px; }
}