@charset "UTF-8";

/* ============================================================
   PDF Arranger 中文站 · 全站共享样式
   配色取自上游官方 logo SVG 的渐变与高光色：
   蓝 #2E73C7 / #3584E4，紫 #923FA7 / #A347BA，
   绿 #2EC472 / #33D17A，深色 #15345B
   ============================================================ */

:root {
  --blue: #2E73C7;
  --blue-bright: #3584E4;
  --blue-deep: #255C9F;
  --purple: #923FA7;
  --purple-bright: #A347BA;
  --green: #2EC472;
  --green-bright: #33D17A;
  --ink: #15345B;
  --text: #26384A;
  --muted: #5A6B7D;
  --line: #DCE4EE;
  --line-soft: #EAF0F7;
  --bg: #FFFFFF;
  --bg-soft: #F6F8FC;
  --tint-blue: #E8F0FC;
  --tint-green: #E7F7EE;
  --tint-purple: #F4EAF7;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow-sm: 0 2px 10px rgba(21, 52, 91, .06);
  --shadow-md: 0 12px 32px rgba(21, 52, 91, .10);
  --maxw: 1160px;
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 { color: var(--ink); line-height: 1.35; font-weight: 700; margin: 0 0 .6em; }
h1 { font-size: clamp(2rem, 4.4vw, 3rem); letter-spacing: -.02em; text-wrap: balance; }
h2 { font-size: clamp(1.5rem, 2.8vw, 2rem); letter-spacing: -.01em; }
h3 { font-size: 1.125rem; }
p { margin: 0 0 1em; }
a { color: var(--blue-deep); text-decoration: none; }
a:hover { color: var(--blue-bright); text-decoration: underline; }
ul, ol { padding-left: 1.25em; }
img, svg { max-width: 100%; }
img { height: auto; }

:focus-visible { outline: 3px solid var(--blue-bright); outline-offset: 3px; border-radius: 3px; }

.svg-sprite { position: absolute; width: 0; height: 0; overflow: hidden; }
.icon { width: 1.25em; height: 1.25em; flex: 0 0 auto; stroke: currentColor; fill: none;
  stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; vertical-align: -.2em; }

.container { width: min(100% - 40px, var(--maxw)); margin-inline: auto; }
.section { padding: 72px 0; }
.section--soft { background: var(--bg-soft); }
.section-head { max-width: 720px; margin-bottom: 40px; }
.section-head p { color: var(--muted); font-size: 1.0625rem; margin: 0; }
/* 供搜索意图直答使用的摘要块（置于 H1 之后） */
.answer { max-width: 780px; margin: 18px 0 0; padding: 14px 18px;
  background: var(--tint-blue); border-left: 3px solid var(--blue);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0; font-size: 1rem; }
.answer strong { color: var(--ink); }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; color: var(--blue-deep);
  font-size: .8125rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase;
  margin-bottom: 14px; }
.eyebrow::before { content: ""; width: 20px; height: 3px; border-radius: 2px; background: var(--blue); }

/* ---------- 顶部三色品牌条 ---------- */
.brandbar { height: 5px; display: flex; }
.brandbar span { flex: 1; }
.brandbar span:nth-child(1) { background: var(--blue); }
.brandbar span:nth-child(2) { background: var(--purple); }
.brandbar span:nth-child(3) { background: var(--green); }

/* ---------- 页头与导航 ---------- */
.site-header { background: rgba(255, 255, 255, .96); border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 20; }
.header-inner { display: flex; align-items: center; gap: 28px; min-height: 72px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); font-weight: 700;
  font-size: 1.0625rem; white-space: nowrap; }
.brand:hover { color: var(--ink); text-decoration: none; }
.brand img { width: 38px; height: 38px; display: block; }
.brand small { display: block; font-size: .6875rem; font-weight: 500; color: var(--muted); letter-spacing: .04em; }

.nav-toggle { display: none; margin-left: auto; width: 42px; height: 42px; border: 1px solid var(--line);
  background: var(--bg); border-radius: var(--radius-sm); color: var(--ink); cursor: pointer; }
.nav-toggle .icon { width: 22px; height: 22px; }

.site-nav { margin-left: auto; }
.site-nav ul { display: flex; align-items: center; gap: 4px; list-style: none; margin: 0; padding: 0; }
.site-nav a { display: block; padding: 8px 14px; border-radius: var(--radius-sm); color: var(--text);
  font-size: .9375rem; font-weight: 500; }
.site-nav a:hover { background: var(--bg-soft); color: var(--blue-deep); text-decoration: none; }
.site-nav a[aria-current="page"] { color: var(--blue-deep); background: var(--tint-blue); font-weight: 700; }
.header-cta { margin-left: 8px; }

/* ---------- 按钮 ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  min-height: 46px; padding: 0 22px; border: 1px solid transparent; border-radius: var(--radius-sm);
  font: inherit; font-size: .9375rem; font-weight: 700; cursor: pointer; transition: transform .16s ease,
  background-color .16s ease, box-shadow .16s ease, color .16s ease; white-space: nowrap; }
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn--primary { background: var(--blue); color: #FFFFFF; box-shadow: 0 6px 16px rgba(46, 115, 199, .22); }
.btn--primary:hover { background: var(--blue-deep); color: #FFFFFF; box-shadow: 0 8px 20px rgba(46, 115, 199, .30); }
.btn--ghost { border-color: var(--line); background: var(--bg); color: var(--blue-deep); }
.btn--ghost:hover { border-color: var(--blue); background: var(--tint-blue); color: var(--blue-deep); }
.btn--white { background: #FFFFFF; color: var(--blue-deep); }
.btn--white:hover { color: var(--blue-deep); }
.btn--lg { min-height: 54px; padding: 0 30px; font-size: 1.0625rem; }
.btn .icon { width: 18px; height: 18px; }
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; }

/* ---------- 首页 Hero ---------- */
.hero { padding: 76px 0 72px; background:
  radial-gradient(900px 420px at 88% -10%, rgba(146, 63, 167, .07), transparent 70%),
  radial-gradient(900px 500px at 5% 100%, rgba(46, 196, 114, .07), transparent 70%),
  var(--bg-soft); }
.hero-grid { display: grid; grid-template-columns: 1fr 1.06fr; gap: 56px; align-items: center; }
.hero h1 { margin-bottom: 20px; }
.hero-lead { font-size: 1.125rem; color: var(--muted); max-width: 30em; margin-bottom: 28px; }
.hero-points { list-style: none; margin: 30px 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: 10px 22px; }
.hero-points li { display: inline-flex; align-items: center; gap: 7px; font-size: .875rem; color: var(--muted); }
.hero-points .icon { color: var(--green); width: 17px; height: 17px; }
.hero-visual { position: relative; }
.hero-visual img { display: block; width: 100%; border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow-md); background: #FFFFFF; }
.hero-visual figcaption { margin-top: 10px; font-size: .8125rem; color: var(--muted); text-align: center; }

/* ---------- 通用卡片栅格 ---------- */
.grid { display: grid; gap: 20px; }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.card { background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px; transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease; }
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-sm); border-color: #C7D9F0; }
.card h3 { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.card p { margin: 0; color: var(--muted); font-size: .9375rem; }
.card ul { margin: 12px 0 0; color: var(--muted); font-size: .9375rem; }
.card li + li { margin-top: 6px; }
.icon-box { display: inline-flex; align-items: center; justify-content: center; width: 42px; height: 42px;
  border-radius: 10px; background: var(--tint-blue); color: var(--blue-deep); margin-bottom: 16px; }
.icon-box .icon { width: 22px; height: 22px; }
.icon-box--green { background: var(--tint-green); color: #177A47; }
.icon-box--purple { background: var(--tint-purple); color: var(--purple); }
.card .inline-icon { width: 20px; height: 20px; color: var(--blue); }

/* ---------- 场景卡 ---------- */
.scene-card { display: flex; flex-direction: column; gap: 4px; }
.scene-card .step-no { font-size: .75rem; font-weight: 700; color: var(--blue);
  letter-spacing: .1em; margin-bottom: 2px; }

/* ---------- 事实条 ---------- */
.facts { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0;
  border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: var(--bg); }
.fact { padding: 26px 22px; border-right: 1px solid var(--line); }
.fact:last-child { border-right: 0; }
.fact strong { display: block; color: var(--ink); font-size: 1.25rem; line-height: 1.4; }
.fact span { display: block; color: var(--muted); font-size: .8125rem; margin-top: 4px; }
.note { margin-top: 18px; font-size: .8125rem; color: var(--muted); }

/* ---------- 界面预览 ---------- */
.preview figure { margin: 0; }
.preview img { display: block; width: 100%; border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow-md); }
.preview figcaption { margin-top: 12px; font-size: .875rem; color: var(--muted); }

/* ---------- 列表 / 说明块 ---------- */
.feature-list { list-style: none; padding: 0; margin: 0; display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px 28px; }
.feature-list li { display: flex; align-items: flex-start; gap: 9px; color: var(--text); font-size: .9375rem; }
.feature-list .icon { color: var(--green); margin-top: 5px; width: 17px; height: 17px; }
.callout { border-left: 4px solid var(--blue); background: var(--tint-blue);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0; padding: 20px 24px; margin: 28px 0 0; }
.callout strong { color: var(--ink); }
.callout p:last-child { margin-bottom: 0; }
.callout--warn { border-left-color: var(--purple); background: var(--tint-purple); }

/* ---------- 面包屑 ---------- */
.breadcrumb { padding: 18px 0 0; font-size: .8125rem; color: var(--muted); }
.breadcrumb ol { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; margin: 0; padding: 0; }
.breadcrumb li + li::before { content: "/"; margin-right: 8px; color: #A8B6C5; }
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--blue-deep); }
.breadcrumb [aria-current="page"] { color: var(--ink); font-weight: 600; }

/* ---------- 页头内容区 ---------- */
.page-head { padding: 34px 0 44px; border-bottom: 1px solid var(--line-soft); }
.page-head p { color: var(--muted); font-size: 1.0625rem; max-width: 48em; margin: 0; }

/* ---------- 步骤 ---------- */
.steps { counter-reset: step; display: grid; gap: 18px; }
.step { display: grid; grid-template-columns: 52px 1fr; gap: 18px; background: var(--bg);
  border: 1px solid var(--line); border-radius: var(--radius); padding: 24px 26px; }
.step::before { counter-increment: step; content: counter(step, decimal-leading-zero);
  display: flex; align-items: center; justify-content: center; width: 44px; height: 44px;
  border-radius: 12px; background: var(--tint-blue); color: var(--blue-deep); font-weight: 700;
  font-size: .9375rem; }
.step h3 { margin: 4px 0 8px; }
.step p { margin: 0; color: var(--muted); font-size: .9375rem; }

/* ---------- 表格 ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: var(--bg); }
table { width: 100%; border-collapse: collapse; font-size: .9375rem; min-width: 620px; }
th, td { text-align: left; padding: 14px 18px; border-bottom: 1px solid var(--line-soft); vertical-align: top; }
thead th { background: var(--bg-soft); color: var(--ink); font-weight: 700; white-space: nowrap; }
tbody tr:last-child td { border-bottom: 0; }
td code { background: var(--bg-soft); border: 1px solid var(--line-soft); border-radius: 4px;
  padding: 2px 6px; font-size: .85em; color: var(--blue-deep); word-break: break-word; }
.table-note { font-size: .8125rem; color: var(--muted); margin-top: 12px; }

/* ---------- 来源链接列表 ---------- */
.source-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.source-list li { display: flex; align-items: flex-start; gap: 12px; padding: 16px 18px;
  border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--bg); }
.source-list .icon { color: var(--blue); margin-top: 3px; }
.source-list strong { display: block; color: var(--ink); font-size: .9375rem; }
.source-list span { display: block; color: var(--muted); font-size: .8125rem; word-break: break-all; }

/* ---------- FAQ ---------- */
.faq { display: grid; gap: 14px; }
.faq details { border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--bg);
  padding: 16px 20px; }
.faq summary { cursor: pointer; font-weight: 700; color: var(--ink); }
.faq details p { margin: 12px 0 0; color: var(--muted); font-size: .9375rem; }

/* ---------- CTA ---------- */
.cta-band { background: var(--ink); color: #FFFFFF; padding: 60px 0; text-align: center; }
.cta-band h2 { color: #FFFFFF; margin-bottom: 12px; }
.cta-band p { color: #C6D7EC; max-width: 40em; margin: 0 auto 26px; }
.cta-band .btn-row { justify-content: center; }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--bg-soft); border-top: 1px solid var(--line); padding: 48px 0 24px;
  font-size: .875rem; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 36px; }
.site-footer h2, .footer-brand, .site-footer h3 { font-size: .9375rem; font-weight: 700; color: var(--ink); margin: 0 0 12px; }
.site-footer p { color: var(--muted); margin: 0 0 12px; }
.footer-links { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.footer-links a { color: var(--muted); }
.footer-links a:hover { color: var(--blue-deep); }
.footer-disclaimer { border-top: 1px solid var(--line); margin-top: 36px; padding-top: 20px;
  color: var(--muted); font-size: .8125rem; }
.footer-disclaimer p { margin: 0 0 8px; }
.footer-bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px;
  margin-top: 14px; color: var(--muted); font-size: .8125rem; }

/* ---------- 下载弹窗 ---------- */
.modal-overlay { position: fixed; inset: 0; z-index: 100; display: flex; align-items: center;
  justify-content: center; padding: 20px; background: rgba(21, 52, 91, .55);
  backdrop-filter: blur(3px); min-height: 100dvh; }
.modal-overlay[hidden] { display: none; }
.modal { position: relative; width: min(100%, 560px); max-height: calc(100dvh - 40px);
  overflow-y: auto; background: var(--bg); border-radius: 16px; box-shadow: 0 24px 64px rgba(10, 30, 60, .28);
  padding: 32px; }
.modal-close { position: absolute; top: 14px; right: 14px; width: 38px; height: 38px;
  display: flex; align-items: center; justify-content: center; border: 1px solid var(--line);
  border-radius: 50%; background: var(--bg-soft); color: var(--muted); cursor: pointer; }
.modal-close:hover { color: var(--ink); border-color: var(--blue); }
.modal h2 { font-size: 1.5rem; margin: 0 0 8px; }
.modal-intro { color: var(--muted); font-size: .9375rem; margin-bottom: 24px; }
.qr-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.qr-item { border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; text-align: center; }
.qr-code { width: 100%; aspect-ratio: 1 / 1; max-width: 176px; margin: 0 auto 14px;
  padding: 6px; border: 1px solid var(--line); border-radius: 10px; background: #FFFFFF;
  display: flex; align-items: center; justify-content: center; }
.qr-code img { display: block; width: 100%; height: 100%; object-fit: contain; }
.qr-item strong { display: block; color: var(--ink); font-size: .9375rem; line-height: 1.5; }
.qr-item .qr-hint { display: block; color: var(--muted); font-size: .75rem; margin-top: 4px; }
.modal-foot { margin: 22px 0 0; padding-top: 18px; border-top: 1px solid var(--line-soft);
  color: var(--muted); font-size: .8125rem; }
.modal-foot a { color: var(--blue-deep); }

/* ---------- 404 ---------- */
.not-found { padding: 100px 0 120px; text-align: center; }
.not-found .code { font-size: clamp(4rem, 12vw, 7rem); font-weight: 800; color: var(--blue);
  line-height: 1; letter-spacing: -.04em; }
.not-found p { color: var(--muted); max-width: 34em; margin: 18px auto 28px; }

/* ---------- 响应式 ---------- */
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero { padding: 56px 0; }
  .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .facts { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .fact:nth-child(2) { border-right: 0; }
  .fact:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid > div:first-child { grid-column: 1 / -1; }
}

@media (max-width: 760px) {
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .header-inner { flex-wrap: wrap; min-height: 64px; gap: 12px; }
  .header-cta { display: none; }
  .site-nav { order: 3; width: 100%; margin-left: 0; display: none; }
  .site-nav.is-open { display: block; }
  .site-nav ul { flex-direction: column; align-items: stretch; padding: 8px 0 16px; gap: 2px; }
  .site-nav a { padding: 11px 14px; }
  .section { padding: 52px 0; }
  .grid--2, .grid--3, .grid--4, .feature-list { grid-template-columns: 1fr; }
  .facts { grid-template-columns: 1fr; }
  .fact { border-right: 0; border-bottom: 1px solid var(--line); }
  .fact:last-child { border-bottom: 0; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-grid > div:first-child { grid-column: auto; }
  .step { grid-template-columns: 1fr; gap: 10px; }
  .qr-grid { grid-template-columns: 1fr; }
  .modal { padding: 26px 20px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}