/* ============================================================
   笃悠悠工具箱 · duyouyou.com
   设计基线：Ardot 742253816316591《笃悠悠工具箱官网》
   ============================================================ */
:root {
  --bg: #FAF6F0;
  --ink: #2B2620;
  --ink-2: #8A8073;
  --ink-3: #A99F90;
  --orange: #D97706;
  --orange-deep: #B4690E;
  --orange-bg: #FBEEDB;
  --orange-soft: #F7E7CE;
  --orange-dot: #E0A266;
  --green: #3D7A68;
  --green-bg: #E3F0EA;
  --green-dot: #8FB8A5;
  --green-soft: #E5EFE9;
  --band: #F3EDE1;
  --line: #EDE6DA;
  --line-2: #E8D9C0;
  --line-3: #C9BDA9;
  --shadow-card: 0 16px 40px rgba(77, 56, 31, 0.18);
  --radius-img: 28px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  background: var(--bg);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 80px;
}

::selection { background: var(--orange-bg); color: var(--orange-deep); }

/* ---------- 导航栏 ---------- */
.nav { background: transparent; }

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 24px;
  padding-bottom: 24px;
}

.brand { display: flex; align-items: center; gap: 12px; }

.brand-mark {
  width: 36px; height: 36px;
  border-radius: 10px;
  background: var(--orange);
  color: #fff;
  font-size: 18px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}

.brand-name { font-size: 20px; font-weight: 700; color: var(--ink); }

.domain-chip {
  padding: 8px 16px;
  border-radius: 999px;
  background: #F1E9DC;
  color: #8A6D3B;
  font-size: 14px; font-weight: 500;
}

/* ---------- Hero ---------- */
.hero {
  background: linear-gradient(180deg, #FFFAF0 0%, #FAF3E9 100%);
}

.hero-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
  padding-top: 88px;
  padding-bottom: 96px;
  text-align: center;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  padding: 8px 20px;
  border-radius: 999px;
  background: #fff;
  box-shadow: 0 4px 12px rgba(89, 71, 46, 0.08);
  color: #8A6D3B;
  font-size: 14px; font-weight: 500;
}

.hero-pill .dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--orange);
  margin-right: 8px;
}

.hero h1 {
  font-size: 76px;
  font-weight: 800;
  letter-spacing: 2px;
  color: var(--ink);
}

.slogan {
  font-size: 28px;
  font-weight: 500;
  letter-spacing: 2px;
  color: var(--orange-deep);
}

.hero-sub {
  font-size: 17px;
  line-height: 1.8;
  color: var(--ink-2);
}

/* ---------- 作品区块 ---------- */
.product { background: #fff; }

.product-inner {
  display: flex;
  align-items: center;
  gap: 64px;
  padding-top: 110px;
  padding-bottom: 110px;
}

.product-text { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 22px; }

.label-row { display: flex; align-items: center; gap: 14px; }

.label-num {
  font-size: 14px; font-weight: 700;
  letter-spacing: 4px;
}

.label-line { width: 40px; height: 2px; border-radius: 1px; background: var(--line-2); }

.chip {
  padding: 5px 12px;
  border-radius: 999px;
  font-size: 13px; font-weight: 500;
}

.chip-orange { background: var(--orange-bg); color: var(--orange-deep); }
.chip-green { background: var(--green-bg); color: var(--green); }

.product-text h2 { font-size: 46px; font-weight: 700; }

.tagline { font-size: 20px; font-weight: 500; letter-spacing: 1px; }
.tagline-orange { color: var(--orange-deep); }
.tagline-green { color: var(--green); }

.desc { font-size: 16px; line-height: 1.8; color: var(--ink-2); }

/* 特性列表 */
.features { list-style: none; display: flex; flex-direction: column; gap: 14px; }

.features li { display: flex; align-items: center; gap: 12px; font-size: 15px; }

.features li::before {
  content: "";
  flex: none;
  width: 6px; height: 6px;
  border-radius: 3px;
}

.product-orange .features li::before { background: var(--orange-dot); }
.product-green .features li::before { background: var(--green-dot); }

.features b { font-weight: 700; color: var(--ink); }
.features span { color: var(--ink-2); }

/* 作品一：双手机视觉 */
.visual { flex: none; }

.visual-ledger {
  position: relative;
  width: 620px;
  max-width: 100%;
  aspect-ratio: 620 / 716;
}

.blob-orange {
  position: absolute;
  left: 4.84%; top: 11.17%;
  width: 90.32%; height: 75.42%;
  border-radius: 64px;
  background: var(--orange-soft);
}

.phone {
  position: absolute;
  width: 48.4%;
  border-radius: var(--radius-img);
  box-shadow: var(--shadow-card);
  transition: transform 0.35s ease;
}

.phone:hover { transform: translateY(-6px); }

.phone1 { left: 3.2%; top: 5.6%; }
.phone2 { left: 51.9%; top: 15.6%; }

/* 作品二：笔记双窗口视觉（画布导出图） */
.visual-notes { width: 760px; max-width: 100%; }

.visual-notes img {
  width: 100%;
  border-radius: 16px;
}

/* ---------- 预告区 ---------- */
.teaser {
  background: var(--band);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
  padding: 84px 24px 64px;
  text-align: center;
}

.teaser h2 { font-size: 30px; font-weight: 700; }

.teaser p { font-size: 16px; color: var(--ink-2); }

.teaser .dots { display: flex; gap: 8px; }

.teaser .dots i { width: 6px; height: 6px; border-radius: 3px; }
.teaser .dots .o { background: var(--orange); }
.teaser .dots .g { background: var(--green); }
.teaser .dots .s { background: #D9C7A8; }

/* ---------- 页脚 ---------- */
.footer { background: var(--band); }

.footer .container {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding-top: 34px;
  padding-bottom: 40px;
}

.foot-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 14px;
  color: var(--ink-3);
}

.foot-right { letter-spacing: 2px; }

.foot-bottom { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; }

.icp {
  font-size: 13px;
  color: var(--ink-3);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-color: var(--line-3);
  transition: color 0.2s ease;
}

.icp:hover { color: var(--ink-2); }

.sep { width: 4px; height: 4px; border-radius: 2px; background: #D9CDB8; }

.foot-mail { height: 16px; width: auto; }

/* ---------- 响应式 ---------- */
@media (max-width: 1200px) {
  .container { padding-left: 48px; padding-right: 48px; }
  .hero-inner { padding-top: 72px; padding-bottom: 80px; }
  .hero h1 { font-size: 64px; }
  .product-inner { gap: 44px; }
  .visual-ledger { width: 560px; }
  .visual-notes { width: 680px; }
}

@media (max-width: 1024px) {
  .product-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 48px;
    padding-top: 80px;
    padding-bottom: 80px;
  }
  .product-text { order: 1; width: 100%; }
  .visual { order: 2; align-self: center; }
  .hero h1 { font-size: 52px; }
  .slogan { font-size: 24px; }
}

@media (max-width: 640px) {
  .container { padding-left: 20px; padding-right: 20px; }
  .nav-inner { padding-top: 16px; padding-bottom: 16px; }
  .brand-name { font-size: 17px; }
  .domain-chip { padding: 6px 12px; font-size: 12px; }
  .hero-inner { padding-top: 56px; padding-bottom: 60px; gap: 20px; }
  .hero h1 { font-size: 40px; letter-spacing: 1px; }
  .slogan { font-size: 19px; }
  .hero-sub br { display: none; }
  .product-inner { padding-top: 60px; padding-bottom: 60px; }
  .product-text h2 { font-size: 32px; }
  .tagline { font-size: 17px; }
  .features li { align-items: flex-start; }
  .features span { flex: 1; min-width: 0; }
  .blob-orange { border-radius: 40px; }
  :root { --radius-img: 18px; }
  .teaser { padding: 60px 20px 48px; }
  .teaser h2 { font-size: 24px; }
  .teaser p { font-size: 14px; }
  .foot-top { flex-direction: column; align-items: flex-start; gap: 6px; }
}