/* ===== Pala 官网 · Notion 官网风格 · 零依赖 ===== */
:root {
  --ink: #0f0f0f;
  --ink-2: #37352f;
  --ink-3: #73726e;
  --bg: #ffffff;
  --bg-2: #f7f7f5;
  --bg-3: #f1f1ef;
  --line: #e9e9e7;
  --done: #0f7b3d;
  --spec: #b45309;
  --map: #8a8880;
  --accent: #d9730d;
  --accent-soft: #fdf1de;
  --teal: #0f7b6c;
  --teal-soft: #e7f3f0;
  --violet: #6b5b9e;
  --violet-soft: #efeaf7;
  --blue: #2f6b9a;
  --blue-soft: #e8f0f7;
  --radius: 10px;
  --maxw: 1080px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
img { max-width: 100%; height: auto; }
h1, h2, h3, h4 { line-height: 1.25; margin: 0; letter-spacing: -0.01em; }
h1 { font-size: clamp(34px, 6.4vw, 68px); font-weight: 700; }
h2 { font-size: clamp(26px, 4vw, 40px); font-weight: 700; }
h3 { font-size: 21px; font-weight: 600; }
.eyebrow {
  margin: 0 0 14px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--ink-3);
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 10px;
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  border-radius: 1px;
  background: var(--accent);
}
.privacy-inner .eyebrow, .hero-inner .eyebrow { justify-content: center; }
section { padding: 88px 0; }

/* ===== 按钮 ===== */
.btn {
  display: inline-block;
  border: 0;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.15s ease, filter 0.15s ease;
}
.btn-dark { background: var(--ink); color: #fff; box-shadow: 0 6px 18px rgba(15, 15, 15, 0.22); }
.btn-dark:hover { background: #2b2b28; transform: translateY(-1px); }
.btn-light { background: var(--bg-3); color: var(--ink); }
.btn-light:hover { background: #e7e7e4; transform: translateY(-1px); }
.btn-sm { padding: 7px 16px; }
.btn-lg { padding: 13px 32px; font-size: 16px; }

/* ===== 导航 ===== */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
}
.nav.scrolled { border-bottom-color: var(--line); }
.nav-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  gap: 32px;
}
.logo { display: flex; align-items: center; gap: 9px; text-decoration: none; color: var(--ink); }
.logo-mark {
  width: 30px;
  height: 30px;
  border-radius: 7px;
  object-fit: cover;
  display: block;
}
.logo-name { font-size: 17px; font-weight: 700; }
.nav-links { display: flex; gap: 4px; margin-right: auto; }
.nav-links a {
  padding: 6px 12px;
  border-radius: 7px;
  color: var(--ink-2);
  text-decoration: none;
  font-size: 15px;
}
.nav-links a:hover { background: var(--bg-2); }

/* ===== 首屏 ===== */
.hero {
  position: relative;
  overflow: hidden;
  padding: 72px 0 96px;
  text-align: center;
  background:
    radial-gradient(560px 320px at 12% -4%, var(--accent-soft), transparent 70%),
    radial-gradient(620px 360px at 88% 2%, var(--teal-soft), transparent 70%),
    radial-gradient(500px 300px at 50% 40%, var(--violet-soft), transparent 75%),
    var(--bg);
}
.hero-word {
  position: absolute;
  top: 30px;
  right: max(12px, calc(50% - 660px));
  font-size: clamp(140px, 20vw, 250px);
  font-weight: 800;
  line-height: 1;
  letter-spacing: 0.02em;
  color: transparent;
  -webkit-text-stroke: 2px rgba(15, 15, 15, 0.055);
  pointer-events: none;
  user-select: none;
}
.hero-inner { display: flex; flex-direction: column; align-items: center; }
.hl {
  background: linear-gradient(transparent 62%, #fbd98d 62%, #fbd98d 92%, transparent 92%);
  padding: 0 4px;
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 22px;
  padding: 5px 16px;
  border: 1px solid #efd9b8;
  border-radius: 999px;
  font-size: 14px;
  color: var(--accent);
  background: #fffaf2;
}
.badge .pulse {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(217, 115, 13, 0.35); }
  50% { box-shadow: 0 0 0 6px rgba(217, 115, 13, 0); }
}
.hero .sub {
  max-width: 40em;
  margin: 22px 0 36px;
  font-size: clamp(16px, 2.2vw, 19px);
  color: var(--ink-3);
}
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; }

/* 首屏浮动卡片 */
.hero-stage { position: relative; margin-top: 64px; width: min(960px, 100%); }
.float-card {
  position: absolute;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 8px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 16px;
  font-size: 13px;
  color: var(--ink-2);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.1);
  animation: floaty 5s ease-in-out infinite;
}
.float-card b { color: var(--ink); }
.f1 { top: -22px; left: -28px; }
.f2 { top: 36%; right: -40px; animation-delay: 1.2s; }
.f3 { bottom: -18px; left: 8%; animation-delay: 2.4s; }
@keyframes floaty {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* 产品界面卡组（翻页切换动效） */
.deck { position: relative; height: 500px; text-align: left; }
.screen {
  position: absolute;
  inset: 0;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.09);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.65s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.65s ease;
  will-change: transform, opacity;
}
.screen.pos-0 { z-index: 3; transform: none; opacity: 1; }
.screen.pos-1 { z-index: 2; transform: translateY(18px) scale(0.96); opacity: 0.85; }
.screen.pos-2 { z-index: 1; transform: translateY(36px) scale(0.92); opacity: 0.6; }
.screen.exit { z-index: 4; transform: translateY(-70px) scale(1.02) rotate(-1.5deg); opacity: 0; }
.screen.no-anim { transition: none; }
.mock-dot { width: 11px; height: 11px; border-radius: 50%; background: #d9d9d6; }
.screen-body { display: grid; grid-template-columns: 168px 1fr; flex: 1; min-height: 0; }
.side { background: var(--bg-2); border-right: 1px solid var(--line); padding: 14px 10px; }
.side-item {
  padding: 7px 12px;
  border-radius: 7px;
  font-size: 13px;
  color: var(--ink-2);
  margin-bottom: 2px;
}
.side-item.active { background: #e7e7e4; font-weight: 600; color: var(--ink); }
.side-item em {
  font-style: normal;
  font-size: 11px;
  background: #d3453d;
  color: #fff;
  border-radius: 999px;
  padding: 1px 7px;
  margin-left: 4px;
}
.screen-main { padding: 22px 28px; overflow: hidden; font-size: 13px; color: var(--ink-2); }
.screen .win-title { font-size: 18px; }
/* 学情面板统计与图表 */
.stat-row { display: flex; gap: 10px; margin: 12px 0 16px; }
.stat {
  flex: 1;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
}
.stat b { font-size: 20px; font-variant-numeric: tabular-nums; color: var(--ink); }
.stat b.ok { color: var(--done); }
.stat b.mid { color: var(--spec); }
.stat b.no { color: #c23b33; }
.stat span { font-size: 11.5px; color: var(--ink-3); }
.kb { margin-bottom: 12px; }
.kb-row {
  display: grid;
  grid-template-columns: 92px 1fr 52px;
  align-items: center;
  gap: 10px;
  padding: 5px 0;
}
.kb-name { font-size: 12.5px; color: var(--ink-2); }
.kb-bar { height: 8px; border-radius: 4px; background: var(--bg-3); overflow: hidden; }
.kb-bar i { display: block; height: 100%; background: var(--teal); border-radius: 4px; }
.kb-bar i.w2 { background: var(--accent); }
.kb-bar i.w3 { background: #c23b33; }
.kb-v { font-size: 11.5px; color: var(--ink-3); text-align: right; }
.mock-note { margin: 14px 0 0; font-size: 13px; color: var(--ink-3); }

/* ===== 痛点 ===== */
.pains { background: var(--bg-2); }
.pain-grid { display: grid; gap: 16px; grid-template-columns: 1fr; }
.pain-grid blockquote {
  position: relative;
  margin: 0;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 48px 28px 24px;
  font-size: clamp(18px, 2.6vw, 22px);
  font-weight: 600;
  line-height: 1.5;
  color: var(--ink-2);
  transform: rotate(var(--r, 0deg)) translateY(var(--y, 0px));
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
/* 便签纸胶带 */
.pain-grid blockquote::after {
  content: "";
  position: absolute;
  top: -11px;
  left: 50%;
  width: 78px;
  height: 22px;
  transform: translateX(-50%) rotate(-2.5deg);
  background: rgba(251, 217, 141, 0.9);
  border-radius: 2px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}
.pain-grid blockquote:nth-child(2)::after { background: rgba(168, 206, 196, 0.9); transform: translateX(-50%) rotate(2deg); }
.pain-grid blockquote:nth-child(3)::after { background: rgba(195, 184, 221, 0.9); transform: translateX(-50%) rotate(-1.5deg); }
.pain-grid blockquote::before {
  content: "“";
  position: absolute;
  top: 6px;
  left: 20px;
  font-size: 52px;
  line-height: 1;
  color: #f0c98f;
  font-family: Georgia, "Times New Roman", serif;
}
.pain-grid blockquote:hover {
  transform: rotate(0deg) translateY(calc(var(--y, 0px) - 4px));
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.08);
}
.pain-grid blockquote:nth-child(2)::before { color: #a8cec4; }
.pain-grid blockquote:nth-child(3)::before { color: #c3b8dd; }
@media (min-width: 720px) {
  .pain-grid blockquote:nth-child(1) { --r: -1.1deg; }
  .pain-grid blockquote:nth-child(2) { --r: 0.7deg; --y: 26px; }
  .pain-grid blockquote:nth-child(3) { --r: -0.6deg; }
}

/* 波浪下划线高亮词 */
.sq {
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='40' height='9' viewBox='0 0 40 9'%3E%3Cpath d='M0 5.5 Q 5 1.5 10 5.5 T 20 5.5 T 30 5.5 T 40 5.5' fill='none' stroke='%23d9730d' stroke-width='2.6' stroke-linecap='round'/%3E%3C/svg%3E") left bottom / 40px 9px repeat-x;
  padding-bottom: 8px;
}
.privacy .sq { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='40' height='9' viewBox='0 0 40 9'%3E%3Cpath d='M0 5.5 Q 5 1.5 10 5.5 T 20 5.5 T 30 5.5 T 40 5.5' fill='none' stroke='%230f7b6c' stroke-width='2.6' stroke-linecap='round'/%3E%3C/svg%3E"); }

/* ===== 核心能力 ===== */
.caps h2 { margin-bottom: 64px; }
.cap-row {
  position: relative;
  display: grid;
  gap: 40px;
  align-items: center;
  margin-bottom: 96px;
}
/* 背景幽灵序号 */
.cap-row::before {
  content: attr(data-num);
  position: absolute;
  top: -50px;
  left: -14px;
  z-index: -1;
  font-size: 148px;
  font-weight: 800;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  color: transparent;
  -webkit-text-stroke: 1.5px #e6e4df;
  pointer-events: none;
  user-select: none;
}
.cap-row.flip::before { left: auto; right: -14px; }
.cap-row:nth-of-type(2)::before { -webkit-text-stroke-color: #d8e8e3; }
.cap-row:nth-of-type(3)::before { -webkit-text-stroke-color: #e2dcf0; }
.cap-row:nth-of-type(4)::before { -webkit-text-stroke-color: #d8e4ef; }
.cap-row:last-child { margin-bottom: 0; }
.cap-num {
  display: inline-block;
  margin-right: 12px;
  font-size: 13px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 7px;
  padding: 3px 9px;
  vertical-align: 4px;
}
.cap-row:nth-of-type(2) .cap-num { color: var(--teal); background: var(--teal-soft); }
.cap-row:nth-of-type(3) .cap-num { color: var(--violet); background: var(--violet-soft); }
.cap-row:nth-of-type(4) .cap-num { color: var(--blue); background: var(--blue-soft); }
.cap-text p { color: var(--ink-3); font-size: 16.5px; margin: 14px 0 0; max-width: 32em; }
/* 产品界面复刻（Notion 式） */
.cap-visual {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.07);
  overflow: hidden;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  font-size: 13px;
  color: var(--ink-2);
}
.cap-visual:hover {
  transform: rotate(0deg) translateY(-4px);
  box-shadow: 0 22px 52px rgba(0, 0, 0, 0.12);
}
@media (min-width: 720px) {
  .cap-visual { transform: rotate(0.8deg); }
  .cap-row.flip .cap-visual { transform: rotate(-0.8deg); }
}
.win-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 10px 14px;
  background: var(--bg-2);
  border-bottom: 1px solid var(--line);
}
.win-crumb { margin-left: 8px; font-size: 12px; color: var(--ink-3); }
.win-act { margin-left: auto; color: var(--ink-3); font-size: 14px; }
.win-body { padding: 18px 22px 16px; }
.win-title { font-size: 17px; font-weight: 700; color: var(--ink); margin-bottom: 6px; letter-spacing: -0.01em; }
.win-title.sm { font-size: 13px; font-weight: 600; margin: 14px 0 6px; }
.win-meta { font-size: 12px; color: var(--ink-3); margin-bottom: 12px; }
.blk {
  border-radius: 6px;
  padding: 6px 8px;
  margin-bottom: 4px;
}
.blk-p { margin: 4px 0 0; font-size: 12.5px; line-height: 1.6; }
.callout {
  display: flex;
  gap: 8px;
  align-items: flex-start;
  background: var(--violet-soft);
  padding: 9px 12px;
  line-height: 1.55;
}
.callout.warn { background: #fbf0de; }
.blk-icon {
  flex: none;
  width: 15px;
  height: 15px;
  border-radius: 4px;
  background: var(--violet);
  margin-top: 3px;
}
.callout.warn .blk-icon { background: var(--spec); }
.toggle { color: var(--ink-2); font-weight: 500; }
.toggle .tg { display: flex; align-items: center; gap: 6px; }
.toggle .tg::before {
  content: "▸";
  font-size: 11px;
  color: var(--ink-3);
  transition: transform 0.15s ease;
}
.toggle.open .tg::before { transform: rotate(90deg); }
.tg-body {
  margin: 6px 0 8px 18px;
  padding: 10px 12px;
  border-left: 2px solid var(--line);
}
.graph { width: 100%; max-width: 260px; display: block; margin-bottom: 6px; }
.win-foot {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  color: var(--ink-3);
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.st {
  font-size: 11.5px;
  font-weight: 600;
  border-radius: 999px;
  padding: 2px 10px;
}
.st-ok { background: #e7f3ec; color: var(--done); }
.st-warn { background: #fbf0de; color: var(--spec); }
.st-no { background: #fbe9e7; color: #c23b33; }
/* 资料入库 */
.file-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 8px;
  border-radius: 6px;
  background: var(--bg-2);
  margin-bottom: 6px;
}
.file-ic {
  flex: none;
  width: 22px;
  height: 22px;
  border-radius: 5px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  color: #fff;
}
.ft-doc { background: #2f6b9a; }
.ft-pdf { background: #c23b33; }
.ft-xls { background: #0f7b3d; }
.file-name { font-weight: 500; color: var(--ink); }
.file-size { font-size: 11.5px; color: var(--ink-3); margin-left: auto; }
.file-row .st { margin-left: 4px; }
.tree-row {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 3px 8px;
  color: var(--ink-2);
}
.tree-row em { font-style: normal; font-size: 11.5px; color: var(--ink-3); }
.tree-row.lv1 { padding-left: 30px; }
.tg-arrow {
  width: 0; height: 0;
  border-left: 5px solid var(--ink-3);
  border-top: 4px solid transparent;
  border-bottom: 4px solid transparent;
}
.tg-arrow.open { transform: rotate(90deg); }
/* 学情问答 */
.msg.user {
  margin-left: auto;
  max-width: 82%;
  background: var(--bg-3);
  border-radius: 12px 12px 3px 12px;
  padding: 9px 14px;
  color: var(--ink);
  margin-bottom: 12px;
}
.msg.ai { display: flex; gap: 10px; margin-bottom: 14px; }
.ai-ava {
  flex: none;
  width: 26px;
  height: 26px;
  border-radius: 6px;
  background: var(--ink);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.ai-body { flex: 1; min-width: 0; }
.ai-meter {
  height: 7px;
  border-radius: 4px;
  background: var(--bg-3);
  overflow: hidden;
  margin: 8px 0 10px;
}
.ai-meter i { display: block; height: 100%; background: var(--ink); border-radius: 4px; }
.ask-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 9px 12px;
  background: #fff;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}
.ask-ph { font-size: 12.5px; color: var(--ink-3); }
.ask-send {
  margin-left: auto;
  width: 24px;
  height: 24px;
  border-radius: 6px;
  background: var(--ink);
  color: #fff;
  font-size: 13px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
/* 主日历 */
.wk {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 5px;
  margin-bottom: 14px;
}
.wk-h { font-size: 11.5px; color: var(--ink-3); text-align: center; padding-bottom: 2px; }
.wk-d {
  min-width: 0;
  min-height: 64px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--bg-2);
  padding: 4px;
}
.wk-d .d { display: block; font-size: 11px; color: var(--ink-3); margin-bottom: 4px; padding-left: 2px; }
.evt {
  display: block;
  font-size: 10.5px;
  font-weight: 600;
  border-radius: 5px;
  padding: 2px 5px;
  margin-bottom: 3px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.ev-cls { background: #e9e4f5; color: #5b4a9e; }
.ev-exam { background: #fbf0de; color: var(--spec); }
.ev-ddl { background: #fbe9e7; color: #c23b33; }
.pkg {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px 14px;
}
.pkg-h {
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.pkg-t { font-size: 12px; color: var(--ink-3); }

/* ===== 中部 CTA ===== */
.cta-band {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(rgba(255, 255, 255, 0.13) 1.2px, transparent 1.2px) 0 0 / 22px 22px,
    linear-gradient(160deg, #191914, var(--ink) 55%);
  color: #fff;
  text-align: center;
}
.cta-ghost {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: clamp(110px, 20vw, 240px);
  font-weight: 800;
  letter-spacing: 0.06em;
  white-space: nowrap;
  color: transparent;
  -webkit-text-stroke: 1.5px rgba(255, 255, 255, 0.12);
  pointer-events: none;
  user-select: none;
}
.cta-band-inner { position: relative; z-index: 1; }
.serif-accent {
  font-family: Georgia, "Times New Roman", "Songti SC", "SimSun", serif;
  font-style: italic;
  font-weight: 600;
  color: #fbd98d;
  padding: 0 2px;
}
.cta-band h2 { margin-bottom: 28px; font-size: clamp(30px, 5vw, 48px); }
.cta-band .btn-dark { background: #fff; color: var(--ink); box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35); }
.cta-band .btn-dark:hover { background: #e9e9e7; }

/* ===== 社会证明 ===== */
.proof h2 { margin-bottom: 40px; }
.proof-grid { display: grid; gap: 16px; grid-template-columns: 1fr; }
.proof-card {
  position: relative;
  margin: 0;
  border: 1px dashed #c7c7c2;
  border-radius: var(--radius);
  padding: 46px 26px 24px;
  background: var(--bg-2);
  transform: rotate(var(--r, 0deg));
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.proof-card:hover {
  transform: rotate(0deg) translateY(-3px);
  box-shadow: 0 14px 32px rgba(0, 0, 0, 0.09);
}
@media (min-width: 720px) {
  .proof-card:nth-child(1) { --r: -0.9deg; }
  .proof-card:nth-child(2) { --r: 0.7deg; }
  .proof-card:nth-child(3) { --r: -0.6deg; }
}
.proof-card::before {
  content: "“";
  position: absolute;
  top: 10px;
  left: 20px;
  font-size: 46px;
  line-height: 1;
  color: #d9d9d6;
  font-family: Georgia, "Times New Roman", serif;
}
.proof-card p { margin: 0 0 14px; font-size: 15.5px; color: var(--ink-2); }
.proof-card cite { font-style: normal; font-size: 13.5px; color: var(--ink-3); }
.proof-stat { margin: 36px 0 8px; font-size: clamp(19px, 3vw, 26px); font-weight: 700; }
.proof-stat b { color: var(--spec); }

/* ===== 关于我们 ===== */
.about { background: var(--bg-2); }
.about-inner { max-width: 720px; }
.about h2 { margin-bottom: 16px; }
.about p:last-child { color: var(--ink-3); font-size: 16.5px; }

/* ===== 功能全景 ===== */
.features {
  background:
    radial-gradient(rgba(15, 15, 15, 0.045) 1px, transparent 1px) 0 0 / 22px 22px,
    var(--bg-2);
}
.feat-scene { border-radius: 12px; transition: background 0.2s ease; }
.feat-scene:hover { background: rgba(255, 255, 255, 0.7); }
.features h2 { margin-bottom: 10px; }
.features-sub { color: var(--ink-3); margin: 0 0 40px; }
.dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; flex: none; }
.dot.done { background: var(--done); }
.dot.spec { background: var(--spec); }
.feat-scene {
  display: grid;
  grid-template-columns: 250px 1fr;
  gap: 10px 36px;
  padding: 26px 0;
  border-top: 1px solid var(--line);
}
.feat-scene:last-child { border-bottom: 1px solid var(--line); }
.feat-scene-head { display: flex; align-items: center; gap: 12px; }
.feat-idx {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 34px;
  height: 34px;
  border-radius: 9px;
  font-size: 13px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}
.feat-idx.c1 { color: var(--accent); background: var(--accent-soft); }
.feat-idx.c2 { color: var(--teal); background: var(--teal-soft); }
.feat-idx.c3 { color: var(--violet); background: var(--violet-soft); }
.feat-idx.c4 { color: var(--blue); background: var(--blue-soft); }
.feat-scene-head h3 { font-size: 16px; }
.feat-count { margin-left: auto; font-size: 12.5px; color: var(--ink-3); font-variant-numeric: tabular-nums; }
.feat-chips { display: flex; flex-wrap: wrap; gap: 8px; align-content: flex-start; }
.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 13.5px;
  color: var(--ink-2);
  transition: opacity 0.2s ease, transform 0.15s ease, box-shadow 0.15s ease;
}
.chip:hover { transform: translateY(-2px); box-shadow: 0 6px 16px rgba(0, 0, 0, 0.08); }

/* ===== 滚动渐显 ===== */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.55s ease, transform 0.55s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .float-card, .badge .pulse { animation: none; }
  html { scroll-behavior: auto; }
}

/* ===== 数据安全 ===== */
.privacy-inner { text-align: center; }
.privacy h2 { margin-bottom: 12px; }
.privacy-sub { color: var(--ink-3); max-width: 34em; margin: 0 auto 52px; }
.privacy-grid { display: grid; gap: 16px; grid-template-columns: 1fr; text-align: left; counter-reset: priv; }
.privacy-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px 26px;
  background: var(--bg-2);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.privacy-item:hover { transform: translateY(-3px); box-shadow: 0 12px 30px rgba(0, 0, 0, 0.07); }
.privacy-item h4 { font-size: 16px; margin: 0 0 8px; display: flex; align-items: center; gap: 10px; }
.privacy-item h4::before {
  counter-increment: priv;
  content: counter(priv, decimal-leading-zero);
  font-size: 12px;
  font-weight: 700;
  color: var(--teal);
  background: var(--teal-soft);
  border-radius: 6px;
  padding: 2px 8px;
}
.privacy-item p { margin: 0; font-size: 14.5px; color: var(--ink-3); }

/* ===== FAQ ===== */
.faq-inner { max-width: 760px; }
.faq h2 { margin-bottom: 36px; }
.faq details { border-bottom: 1px solid var(--line); padding: 18px 0; }
.faq summary {
  cursor: pointer;
  font-size: 17px;
  font-weight: 600;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.faq summary::after {
  content: "+";
  font-size: 22px;
  font-weight: 400;
  color: var(--ink-3);
  transition: transform 0.15s ease;
}
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { color: var(--ink-3); margin: 12px 0 2px; max-width: 44em; }

/* ===== 收尾 CTA ===== */
.final {
  background:
    radial-gradient(520px 260px at 18% 0%, var(--accent-soft), transparent 70%),
    radial-gradient(520px 260px at 84% 100%, var(--teal-soft), transparent 70%),
    var(--bg-2);
  text-align: center;
}
.final h2 { font-size: clamp(28px, 4.6vw, 44px); }
.final-inner p { color: var(--ink-3); margin: 14px 0 30px; font-size: 17px; }

/* ===== 页脚 ===== */
.footer { border-top: 1px solid var(--line); padding: 40px 0; }
.footer-inner { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.footer-brand { display: flex; align-items: center; gap: 9px; }
.footer-note { margin: 0 0 0 auto; font-size: 13.5px; color: var(--ink-3); }

/* ===== 预约弹层 ===== */
dialog#reserve-dialog {
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 36px 40px;
  max-width: 340px;
  text-align: center;
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.18);
}
dialog#reserve-dialog::backdrop { background: rgba(15, 15, 15, 0.4); }
dialog#reserve-dialog h3 { margin-bottom: 10px; }
dialog#reserve-dialog p { color: var(--ink-3); font-size: 15px; margin: 0 0 8px; }
dialog#reserve-dialog .qr { width: 200px; height: 200px; margin: 18px auto 26px; display: block; }
dialog#reserve-dialog .btn { padding: 9px 28px; }

/* ===== 响应式 ===== */
@media (min-width: 720px) {
  .pain-grid { grid-template-columns: repeat(3, 1fr); }
  .cap-row { grid-template-columns: 1fr 1fr; }
  .cap-row.flip .cap-text { order: 2; }
  .privacy-grid { grid-template-columns: 1fr 1fr; }
  .proof-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 719px) {
  .nav-links { display: none; }
  .nav-inner { gap: 12px; }
  .nav-inner .btn { margin-left: auto; }
  .screen-body { grid-template-columns: 1fr; }
  .side { display: none; }
  .screen-main { padding: 16px 18px; }
  .screen .win-title { font-size: 15px; }
  .deck { height: 430px; }
  .kb-row { grid-template-columns: 78px 1fr 46px; }
  .float-card { display: none; }
  .hero-word { display: none; }
  .cap-row::before { font-size: 76px; top: -26px; left: -4px; }
  .cap-row.flip::before { right: -4px; }
  .cap-row { margin-bottom: 72px; }
  .cta-ghost { font-size: 88px; }
  .hero { background: radial-gradient(420px 260px at 50% -6%, var(--accent-soft), transparent 70%), var(--bg); }
  .feat-scene { grid-template-columns: 1fr; gap: 14px; }
  .feat-count { display: none; }
  section { padding: 64px 0; }
  .footer-note { margin-left: 0; }
}