/* ============================================================
   太氪桃 | 艺文生活社区 · 官网
   艺文编辑风 · 暖纸底 / 墨字 / 品牌淡紫
   ============================================================ */

:root {
  --paper: #f6f1e8;
  --paper-2: #efe7da;
  --card: #fbf8f2;
  --ink: #23201b;
  --ink-soft: #4d463c;
  --muted: #8a8175;
  --line: #d8cebf;
  --line-strong: #b9ab96;
  --lav: #c9a5d5;        /* 品牌淡紫 */
  --lav-deep: #60446d;   /* 深紫 */
  --green: #d9f3a3;      /* 点缀绿 */
  --crimson: #b4482f;
  --font-display: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
  --shadow: 0 24px 60px -32px rgba(35, 32, 27, 0.45);
  --r: 14px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  background:
    radial-gradient(1200px 600px at 85% -8%, rgba(201, 165, 213, 0.28), transparent 60%),
    radial-gradient(900px 500px at -10% 20%, rgba(217, 243, 163, 0.20), transparent 55%),
    var(--paper);
  color: var(--ink);
  line-height: 1.75;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
}

/* 纸纹颗粒 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.5;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.045'/%3E%3C/svg%3E");
}

.wrap {
  position: relative;
  z-index: 1;
  width: min(1120px, 92vw);
  margin: 0 auto;
}

::selection { background: var(--lav); color: #fff; }

a { color: inherit; text-decoration: none; }

/* ============ 顶栏 ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
  background: rgba(246, 241, 232, 0.82);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.brand {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-family: var(--font-display);
}
.brand .mark {
  width: 34px; height: 34px;
  border-radius: 9px;
  object-fit: cover;
  align-self: center;
  box-shadow: 0 6px 16px -8px rgba(96, 68, 109, 0.6);
}
.brand .name { font-size: 20px; font-weight: 700; letter-spacing: 0.06em; }
.brand .tag { font-size: 12px; color: var(--muted); letter-spacing: 0.2em; }

.nav { display: flex; align-items: center; gap: 26px; }
.nav a { font-size: 14px; color: var(--ink-soft); border-bottom: 1px solid transparent; padding-bottom: 3px; transition: color .2s, border-color .2s; }
.nav a:hover { color: var(--lav-deep); border-bottom-color: var(--lav-deep); }
.nav .cta {
  border: 1px solid var(--lav-deep);
  color: var(--lav-deep);
  border-radius: 999px;
  padding: 8px 18px;
}
.nav .cta:hover { background: var(--lav-deep); color: #fff; border-color: var(--lav-deep); }

.burger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 8px; }
.burger span { width: 22px; height: 2px; background: var(--ink); }

/* ============ 首页 Hero ============ */
.hero { padding: 88px 0 40px; position: relative; }
.hero .kicker {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 13px; letter-spacing: 0.34em; color: var(--lav-deep);
  padding-left: 14px; margin-bottom: 22px;
  border-left: 3px solid var(--lav);
}
.hero h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(46px, 8vw, 86px);
  line-height: 1.06;
  letter-spacing: 0.03em;
  margin: 0 0 10px;
}
.hero h1 .accent { color: var(--lav-deep); }
.hero .sub {
  font-size: clamp(15px, 2vw, 19px);
  color: var(--ink-soft);
  max-width: 560px;
  margin: 18px 0 34px;
}
.hero .cta-row { display: flex; gap: 14px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  border-radius: 999px; padding: 13px 26px;
  font-size: 15px; font-weight: 600;
  transition: transform .18s, box-shadow .18s, background .18s;
}
.btn:hover { transform: translateY(-2px); }
.btn-solid { background: var(--lav-deep); color: #fff; box-shadow: var(--shadow); }
.btn-solid:hover { background: #52375e; }
.btn-ghost { border: 1px solid var(--line-strong); color: var(--ink-soft); }
.btn-ghost:hover { background: var(--card); }

.hero .meta-line {
  margin-top: 46px;
  font-size: 12px; color: var(--muted); letter-spacing: 0.16em;
  display: flex; gap: 18px; flex-wrap: wrap;
}
.hero .meta-line span::before { content: "·"; margin-right: 12px; color: var(--lav); }

/* 产品截图拼贴 */
.showcase { margin-top: 46px; position: relative; }
.showcase .ph {
  position: relative;
  border-radius: 18px;
  overflow: hidden;
  box-shadow: var(--shadow);
  background: var(--card);
  transform: rotate(1.2deg);
}
.showcase .ph img { width: 100%; display: block; }
.showcase .ph.b { position: absolute; right: 4%; top: 8%; width: 30%; transform: rotate(-4deg); }
.showcase .ph-label {
  position: absolute; left: 18px; bottom: 14px;
  background: rgba(35, 32, 27, 0.72); color: #fff;
  font-size: 12px; padding: 5px 12px; border-radius: 999px;
  letter-spacing: 0.1em;
}

/* ============ 通栏区 ============ */
.section { padding: 78px 0 30px; }
.section-head { display: flex; align-items: baseline; justify-content: space-between; border-bottom: 1px solid var(--line-strong); padding-bottom: 14px; margin-bottom: 34px; }
.section-head .no { font-family: var(--font-display); color: var(--lav); font-size: 26px; margin-right: 16px; font-weight: 700; }
.section-head h2 { font-family: var(--font-display); font-size: clamp(26px, 4vw, 40px); margin: 0; letter-spacing: 0.04em; }
.section-head .lead { color: var(--muted); font-size: 13px; letter-spacing: 0.12em; }

/* 编辑段（品牌序言） */
.lede {
  display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: 48px;
  align-items: start;
}
.lede .big {
  font-family: var(--font-display);
  font-size: clamp(22px, 2.6vw, 30px);
  line-height: 1.55;
}
.lede .big em { font-style: normal; color: var(--lav-deep); }
.lede .note { color: var(--ink-soft); font-size: 15px; }
.lede .note .drop {
  float: left; font-family: var(--font-display);
  font-size: 64px; line-height: 0.82; margin: 6px 12px 0 0;
  color: var(--lav-deep);
}

/* 产品卡片 */
.prods { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; }
.prods.single { grid-template-columns: 1fr; }
.card.product-showcase {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 30px;
  align-items: center;
}
.card.product-showcase .ps-shot { display: flex; justify-content: center; }
.card.product-showcase .ps-shot img {
  height: 330px;
  border-radius: 14px;
  box-shadow: var(--shadow);
  transform: rotate(2deg);
}
.card.product-showcase ul.feats { columns: 4; }
.card.product-showcase .go { margin-top: 10px; }
.card {
  position: relative;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: 34px 30px 30px;
  overflow: hidden;
  transition: transform .22s, box-shadow .22s;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.card .cat { font-size: 12px; letter-spacing: 0.28em; color: var(--lav-deep); }
.card h3 { font-family: var(--font-display); font-size: 26px; margin: 14px 0 6px; }
.card .en { color: var(--muted); font-size: 13px; letter-spacing: 0.18em; }
.card p.desc { color: var(--ink-soft); font-size: 15px; margin: 16px 0; }
.card ul.feats { list-style: none; margin: 0; padding: 0; columns: 2; column-gap: 22px; }
.card ul.feats li { font-size: 13.5px; color: var(--ink-soft); padding: 5px 0; }
.card ul.feats li::before { content: "◆"; color: var(--lav); font-size: 9px; margin-right: 8px; vertical-align: 2px; }
.card .go { margin-top: 22px; display: inline-flex; gap: 8px; align-items: center; color: var(--lav-deep); font-weight: 600; font-size: 14px; }
.card .corner {
  position: absolute; right: -34px; top: -34px; width: 108px; height: 108px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, var(--lav), transparent 70%);
  opacity: 0.5;
}

/* 亮点 3 列 */
.triptych { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.tile {
  border-top: 1px solid var(--line-strong);
  padding-top: 16px;
}
.tile .k { font-size: 13px; color: var(--lav-deep); letter-spacing: 0.24em; }
.tile h4 { font-family: var(--font-display); font-size: 18px; margin: 10px 0 8px; }
.tile p { color: var(--ink-soft); font-size: 13.5px; margin: 0; }

/* CTA 大区 */
.cta-band { margin: 60px 0 20px; }
.cta-band .box {
  background: var(--lav-deep);
  color: #fff;
  border-radius: 20px;
  padding: 64px 40px;
  text-align: center;
  position: relative; overflow: hidden;
}
.cta-band .box::after {
  content: "太氪桃";
  position: absolute; right: -10px; bottom: -46px;
  font-family: var(--font-display);
  font-size: 170px; opacity: 0.07; line-height: 1; letter-spacing: 0.1em;
}
.cta-band h2 { font-family: var(--font-display); font-size: clamp(30px, 5vw, 52px); margin: 0 0 14px; letter-spacing: 0.05em; }
.cta-band p { margin: 0 0 30px; opacity: 0.85; }
.btn-paper { background: #fff; color: var(--lav-deep); box-shadow: 0 18px 40px -24px rgba(0,0,0,.55); }
.btn-paper:hover { background: var(--green); }

/* ============ 页脚 ============ */
.site-footer { border-top: 1px solid var(--line); margin-top: 40px; padding: 34px 0 46px; }
.site-footer .cols { display: flex; justify-content: space-between; gap: 30px; flex-wrap: wrap; }
.site-footer .f-brand { font-family: var(--font-display); font-size: 18px; font-weight: 700; letter-spacing: 0.06em; }
.site-footer .f-brand small { display: block; font-family: var(--font-body); font-weight: 400; font-size: 12px; color: var(--muted); margin-top: 6px; letter-spacing: 0.15em; }
.site-footer nav { display: flex; gap: 20px; font-size: 13.5px; color: var(--ink-soft); flex-wrap: wrap; }
.site-footer nav a:hover { color: var(--lav-deep); }
.site-footer .legal {
  margin-top: 26px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-size: 12.5px; color: var(--muted);
  text-align: center;
  display: flex; flex-direction: column; align-items: center; gap: 6px;
}
.site-footer .legal a { color: var(--muted); }
.site-footer .legal a:hover { color: var(--lav-deep); }
.site-footer .legal .sep { margin: 0 8px; color: var(--line-strong); }

/* ============ 文章页（协议/隐私/联系） ============ */
.page { padding: 70px 0 20px; }
.page .crumb { font-size: 12px; letter-spacing: 0.3em; color: var(--lav-deep); }
.page h1 {
  font-family: var(--font-display);
  font-size: clamp(34px, 5vw, 56px);
  margin: 12px 0 6px; letter-spacing: 0.05em;
}
.page .updated { color: var(--muted); font-size: 13px; margin-bottom: 36px; }

.prose {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: 40px clamp(20px, 5vw, 56px);
}
.prose h2 { font-family: var(--font-display); font-size: 22px; margin: 34px 0 12px; padding-top: 20px; border-top: 1px dashed var(--line-strong); }
.prose h2:first-child { border-top: 0; padding-top: 0; margin-top: 0; }
.prose h3 { font-size: 16px; margin: 20px 0 8px; color: var(--lav-deep); }
.prose p { color: var(--ink-soft); font-size: 15px; margin: 10px 0; }
.prose li { color: var(--ink-soft); font-size: 15px; margin: 6px 0; }

/* 联系方式页 */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; margin-top: 8px; }
.contact-grid .card .big {
  font-family: var(--font-display);
  font-size: 24px; color: var(--lav-deep); word-break: break-all;
}
.contact-grid .card a.big:hover { color: #52375e; text-decoration: underline; }

/* ============ 加载动效 ============ */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: .08s; }
.reveal.d2 { transition-delay: .16s; }

/* ============ 响应式 ============ */
@media (max-width: 920px) {
  .nav { display: none; position: absolute; top: 68px; left: 0; right: 0; background: var(--paper); border-bottom: 1px solid var(--line); flex-direction: column; align-items: flex-start; padding: 18px 6vw 24px; gap: 16px; }
  .nav.open { display: flex; }
  .burger { display: flex; }
  .lede, .prods, .triptych, .contact-grid { grid-template-columns: 1fr; }
  .card.product-showcase { grid-template-columns: 1fr; }
  .card.product-showcase .ps-shot img { height: 260px; }
  .card.product-showcase ul.feats { columns: 2; }
  .showcase .ph.b { display: none; }
  .site-footer .cols { flex-direction: column; }
}
@media (max-width: 560px) {
  .card ul.feats { columns: 1; }
}