/* ============================================================
   选豆APP — 轻盈现代风
   白底 · 大留白 · 衬线标题 · 细线分隔 · 精致深棕点缀
   ============================================================ */

:root {
  --bg: #F5EDE0;
  --bg-warm: #EDE1CC;
  --bg-warm-2: #E3D2B4;
  --ink: #3D2419;
  --ink-2: #6E5139;
  --muted: #A08A6E;
  --line: #DECBAE;
  --espresso: #3D2419;
  --coffee: #7C5434;
  --gold: #E8B54A;
  --amber: #C98F3E;
  --radius: 4px;
  --max: 1160px;
  --serif: "Noto Serif SC", "Songti SC", "SimSun", serif;
  --sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.7;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: 0; background: none; }
::selection { background: var(--gold); color: #fff; }

.container { max-width: var(--max); margin: 0 auto; padding: 0 32px; }

/* ============ 按钮 ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: 999px;
  font-weight: 500;
  font-size: 15px;
  letter-spacing: .5px;
  white-space: nowrap;
  transition: all .25s cubic-bezier(.4, 0, .2, 1);
}
.btn-lg { padding: 16px 36px; font-size: 16px; }
.btn .arr { transition: transform .25s ease; }
.btn:hover .arr { transform: translateX(4px); }
.btn-primary { background: var(--espresso); color: #fff; }
.btn-primary:hover { background: var(--coffee); transform: translateY(-2px); box-shadow: 0 12px 28px rgba(61, 36, 25, .18); }
.btn-ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); }
.btn-ghost:hover { border-color: var(--ink); transform: translateY(-2px); }
.btn-gold { background: var(--gold); color: var(--espresso); font-weight: 600; }
.btn-gold:hover { background: #F0C877; transform: translateY(-2px); }
.link-arrow {
  font-size: 15px;
  color: var(--ink-2);
  position: relative;
  padding-bottom: 2px;
}
.link-arrow::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 100%; height: 1px;
  background: var(--ink);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform .3s ease;
}
.link-arrow:hover::after { transform: scaleX(1); transform-origin: left; }

/* ============ 通用排版 ============ */
section { padding: 130px 0; }
.eyebrow {
  font-size: 12px;
  letter-spacing: 4px;
  color: var(--gold);
  font-weight: 600;
  margin-bottom: 20px;
  text-transform: uppercase;
}
.eyebrow.light { color: var(--gold); }
.section-head { max-width: 640px; margin-bottom: 80px; }
.section-head.center { text-align: center; margin-left: auto; margin-right: auto; }
.section-title {
  font-family: var(--serif);
  font-size: clamp(32px, 4.2vw, 50px);
  font-weight: 700;
  color: var(--ink);
  line-height: 1.3;
  letter-spacing: 1px;
}
.section-desc {
  font-size: 16px;
  color: var(--ink-2);
  line-height: 1.9;
  margin-top: 24px;
}

/* ============ 顶部导航 ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(245, 237, 224, .85);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s ease;
}
.site-header.scrolled { border-bottom-color: var(--line); }
.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
  gap: 24px;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand-name {
  font-family: var(--serif);
  font-size: 21px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: 2px;
}
.nav-main { display: flex; gap: 44px; }
.nav-main a {
  color: var(--ink-2);
  font-size: 15px;
  font-weight: 500;
  transition: color .2s;
  position: relative;
}
.nav-main a::after {
  content: '';
  position: absolute;
  left: 50%; bottom: -6px;
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--gold);
  transform: translateX(-50%) scale(0);
  transition: transform .25s ease;
}
.nav-main a:hover { color: var(--ink); }
.nav-main a:hover::after { transform: translateX(-50%) scale(1); }
.nav-cta { display: flex; gap: 26px; align-items: center; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; padding: 8px; }
.nav-toggle span { width: 22px; height: 1.5px; background: var(--ink); border-radius: 2px; }

/* ============ Hero ============ */
.hero {
  padding: 100px 0 90px;
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(ellipse 900px 500px at 85% -10%, rgba(232, 181, 74, .10), transparent 60%),
    radial-gradient(ellipse 700px 400px at -10% 40%, rgba(124, 84, 52, .05), transparent 60%);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 80px;
  align-items: center;
}
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  letter-spacing: 2px;
  color: var(--coffee);
  font-weight: 500;
  margin-bottom: 34px;
}
.hero-tag::before {
  content: '';
  width: 36px;
  height: 1px;
  background: var(--gold);
}
.hero-title {
  font-family: var(--serif);
  font-size: clamp(44px, 6vw, 78px);
  font-weight: 700;
  line-height: 1.18;
  color: var(--ink);
  letter-spacing: 2px;
  margin-bottom: 32px;
}
.hero-title em {
  font-style: normal;
  color: var(--coffee);
  position: relative;
  display: inline-block;
}
.hero-title em::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: 6px;
  height: 12px;
  background: rgba(232, 181, 74, .28);
  z-index: -1;
  border-radius: 2px;
}
.title-dot { color: var(--gold); }
.hero-sub {
  font-size: 16px;
  color: var(--ink-2);
  max-width: 520px;
  line-height: 2;
  margin-bottom: 40px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

/* Hero App 卡片 */
.hero-visual { position: relative; display: flex; justify-content: center; }
.app-card {
  background: #FFFDF8;
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 26px;
  width: 400px;
  max-width: 100%;
  box-shadow: 0 30px 70px rgba(61, 36, 25, .08);
  position: relative;
  z-index: 2;
}
.app-card-head { display: flex; align-items: center; gap: 12px; margin-bottom: 22px; }
.app-mark {
  width: 34px; height: 34px;
  border-radius: 9px;
  background: var(--espresso);
  color: var(--gold);
  display: grid;
  place-items: center;
  font-weight: 700;
  font-size: 15px;
  font-family: var(--serif);
}
.app-name { font-weight: 600; font-size: 17px; letter-spacing: 1px; }
.app-pill {
  margin-left: auto;
  border: 1px solid var(--gold);
  color: var(--amber);
  font-size: 11px;
  padding: 4px 12px;
  border-radius: 999px;
  font-weight: 500;
  letter-spacing: 1px;
}
.app-card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-bottom: 18px; }
.app-tile {
  background: #FFF9EF;
  border: 1px solid #EADCC3;
  border-radius: 14px;
  padding: 16px 8px 14px;
  text-align: center;
  transition: transform .25s ease;
}
.app-tile:hover { transform: translateY(-3px); }
.app-tile-ico {
  width: 46px; height: 46px;
  border-radius: 12px;
  margin: 0 auto 10px;
  display: grid;
  place-items: center;
  font-size: 22px;
}
.app-tile-name { font-size: 13px; font-weight: 500; color: var(--ink); margin-bottom: 4px; }
.app-tile-price { font-family: var(--serif); font-size: 18px; font-weight: 700; color: var(--amber); }
.app-tile-price i { font-style: normal; font-size: 11px; color: var(--ink-2); font-family: var(--sans); font-weight: 400; }
.app-card-banner {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--espresso);
  color: #fff;
  border-radius: 14px;
  padding: 16px 18px;
  transition: background .25s;
}
.app-card-banner:hover { background: var(--coffee); }
.gift { font-size: 24px; }
.acb-title { font-weight: 500; font-size: 14px; letter-spacing: .5px; }
.acb-sub { font-size: 12px; color: rgba(255,255,255,.65); margin-top: 2px; }
.acb-arrow { margin-left: auto; color: var(--gold); font-size: 16px; }

.float-chip {
  position: absolute;
  background: #FFFDF8;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 10px 18px;
  box-shadow: 0 12px 32px rgba(61, 36, 25, .08);
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 500;
  font-size: 13px;
  color: var(--ink);
  z-index: 3;
  animation: floatY 5s ease-in-out infinite;
  white-space: nowrap;
}
.float-chip span { font-size: 16px; }
.float-chip-1 { top: -18px; right: -20px; }
.float-chip-2 { bottom: -18px; left: -20px; animation-delay: 2.5s; }
@keyframes floatY {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-9px); }
}

/* Hero 数据条 */
.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 90px;
  border-top: 1px solid var(--line);
}
.hs-item { padding: 44px 24px 0; position: relative; }
.hs-item:not(:first-child)::before {
  content: '';
  position: absolute;
  left: 0; top: 44px;
  width: 1px; height: 64px;
  background: var(--line);
}
.hs-num {
  font-family: var(--serif);
  font-size: 46px;
  font-weight: 700;
  color: var(--ink);
  line-height: 1;
  display: flex;
  align-items: baseline;
  gap: 6px;
}
.hs-num span {
  font-family: var(--sans);
  font-size: 17px;
  color: var(--coffee);
  font-weight: 500;
}
.hs-label { font-size: 14px; color: var(--ink-2); margin-top: 12px; }

/* ============ 品类滚动条 ============ */
.marquee {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  padding: 20px 0;
  background: var(--bg-warm);
}
.marquee-track {
  display: flex;
  align-items: center;
  gap: 28px;
  white-space: nowrap;
  width: max-content;
  animation: marquee 42s linear infinite;
}
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-track span {
  font-family: var(--serif);
  font-size: 16px;
  color: var(--coffee);
  letter-spacing: 2px;
  font-weight: 600;
}
.marquee-track i { color: var(--gold); font-style: normal; font-size: 12px; }
@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ============ 品类矩阵 ============ */
.categories { background: var(--bg-warm); padding: 120px 0; }
.cat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.cat-card {
  background: #FFFDF8;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 34px 32px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  transition: all .3s cubic-bezier(.4, 0, .2, 1);
}
.cat-card:hover {
  border-color: var(--gold);
  transform: translateY(-4px);
  box-shadow: 0 20px 44px rgba(61, 36, 25, .07);
}
.span-2 { grid-column: span 2; flex-direction: row; align-items: flex-start; gap: 26px; }
.span-2 .cat-icon { margin-bottom: 0; }
.cat-icon {
  width: 52px; height: 52px;
  flex: 0 0 52px;
  border-radius: 14px;
  background: var(--bg-warm-2);
  display: grid;
  place-items: center;
  font-size: 24px;
}
.cat-body h3 {
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 10px;
  letter-spacing: 1px;
}
.cat-body p { font-size: 14px; color: var(--ink-2); line-height: 1.8; }
.cat-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.cat-tags span {
  font-size: 12px;
  color: var(--coffee);
  border: 1px solid var(--line);
  padding: 4px 12px;
  border-radius: 999px;
  letter-spacing: .5px;
}

.cat-note {
  display: flex;
  align-items: center;
  gap: 36px;
  margin-top: 64px;
  padding-top: 48px;
  border-top: 1px solid var(--line);
}
.cat-note-num {
  font-family: var(--serif);
  font-size: 96px;
  font-weight: 900;
  color: var(--gold);
  line-height: 1;
  flex: 0 0 auto;
}
.cat-note p {
  font-family: var(--serif);
  font-size: 19px;
  line-height: 1.9;
  color: var(--ink);
  font-weight: 600;
  letter-spacing: .5px;
  max-width: 720px;
}

/* ============ 我们的优势 ============ */
.advantages { padding: 130px 0; background: var(--bg); }
.adv-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}
.adv-item {
  padding: 40px 36px 44px;
  border-left: 1px solid var(--line);
  transition: background .3s ease;
  position: relative;
}
.adv-item:nth-child(3n+1) { border-left: 0; padding-left: 0; }
.adv-item:nth-child(-n+3) { border-bottom: 1px solid var(--line); }
.adv-item:hover { background: var(--bg-warm); }
.adv-item:hover::after {
  content: '';
  position: absolute;
  left: 0; top: 0;
  width: 100%; height: 2px;
  background: var(--gold);
}
.adv-num {
  font-family: var(--serif);
  font-size: 15px;
  color: var(--gold);
  font-weight: 700;
  letter-spacing: 2px;
  margin-bottom: 18px;
}
.adv-item h3 {
  font-family: var(--serif);
  font-size: 21px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 12px;
  letter-spacing: 1px;
}
.adv-item p { font-size: 14px; color: var(--ink-2); line-height: 1.85; }

/* ============ 为什么选择 ============ */
.why { padding: 0 0 130px; background: var(--bg); }
.why-card {
  background: var(--espresso);
  border-radius: 28px;
  padding: 90px 90px;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 70px;
  align-items: center;
  position: relative;
  overflow: hidden;
  background-image:
    radial-gradient(ellipse 500px 400px at 110% 110%, rgba(232, 181, 74, .12), transparent 60%),
    radial-gradient(ellipse 400px 300px at -10% -20%, rgba(232, 181, 74, .08), transparent 60%);
}
.why-label { color: var(--gold); font-size: 13px; letter-spacing: 2px; margin-bottom: 22px; }
.why-title {
  font-family: var(--serif);
  font-size: clamp(30px, 3.6vw, 44px);
  font-weight: 700;
  color: #fff;
  line-height: 1.35;
  margin-bottom: 24px;
  letter-spacing: 1px;
}
.why-desc { font-size: 15px; line-height: 2; color: rgba(255,255,255,.75); margin-bottom: 36px; }
.why-desc b { color: var(--gold); font-weight: 600; }
.why-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border-left: 1px solid rgba(255,255,255,.14);
}
.why-list li {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 15px;
  color: rgba(255,255,255,.92);
  padding: 20px 0 20px 34px;
  border-bottom: 1px solid rgba(255,255,255,.10);
  letter-spacing: .5px;
}
.why-list li:nth-last-child(-n+2) { border-bottom: 0; }
.check {
  color: var(--gold);
  font-size: 15px;
  font-weight: 700;
  flex: 0 0 auto;
}

/* ============ App 板块 ============ */
.app-section { background: var(--bg-warm); padding: 130px 0; }
.app-wrap {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 100px;
  align-items: center;
}
.app-phone { display: flex; justify-content: center; }
.app-screenshot {
  width: 300px;
  max-width: 100%;
  border-radius: 38px;
  box-shadow: 0 40px 90px rgba(61, 36, 25, .22);
}
.phone-frame {
  width: 284px;
  height: 580px;
  background: var(--espresso);
  border-radius: 42px;
  padding: 12px;
  position: relative;
  box-shadow: 0 40px 90px rgba(61, 36, 25, .22);
}
.phone-notch {
  position: absolute;
  top: 12px;
  left: 50%;
  transform: translateX(-50%);
  width: 96px;
  height: 24px;
  background: var(--espresso);
  border-radius: 0 0 14px 14px;
  z-index: 2;
}
.phone-screen {
  background: #FBF3E5;
  border-radius: 32px;
  height: 100%;
  padding: 46px 16px 18px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.ps-top { display: flex; justify-content: space-between; align-items: center; }
.ps-greet .ps-line { font-size: 11px; color: var(--ink-2); }
.ps-greet .ps-line.big { font-family: var(--serif); font-size: 19px; font-weight: 700; color: var(--ink); }
.ps-bell { font-size: 17px; }
.ps-search {
  background: #FFFDF8;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 10px 14px;
  font-size: 12px;
  color: var(--muted);
}
.ps-cats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
.ps-cat {
  background: #FFFDF8;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 9px 4px;
  text-align: center;
  font-size: 10px;
  color: var(--ink-2);
}
.ps-cat div { font-size: 17px; margin-bottom: 3px; }
.ps-list { display: flex; flex-direction: column; gap: 8px; }
.ps-item {
  background: #FFFDF8;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 9px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.ps-thumb {
  width: 36px; height: 36px;
  border-radius: 9px;
  display: grid;
  place-items: center;
  font-size: 17px;
}
.ps-info { flex: 1; }
.ps-name { font-size: 12px; font-weight: 500; color: var(--ink); }
.ps-price { font-size: 10px; color: var(--amber); font-weight: 600; margin-top: 2px; }
.ps-add {
  width: 24px; height: 24px;
  background: var(--espresso);
  color: var(--gold);
  border-radius: 8px;
  display: grid;
  place-items: center;
  font-weight: 700;
  font-size: 14px;
}

.app-title {
  font-family: var(--serif);
  font-size: clamp(32px, 4vw, 46px);
  font-weight: 700;
  color: var(--ink);
  line-height: 1.35;
  margin-bottom: 22px;
  letter-spacing: 1px;
}
.app-desc { font-size: 15px; color: var(--ink-2); line-height: 2; margin-bottom: 40px; max-width: 480px; }
.app-features { display: grid; grid-template-columns: 1fr 1fr; gap: 30px 40px; margin-bottom: 44px; }
.app-features li { display: flex; gap: 16px; }
.af-ico {
  width: 46px; height: 46px;
  flex: 0 0 46px;
  background: #FFFDF8;
  border: 1px solid var(--line);
  border-radius: 13px;
  display: grid;
  place-items: center;
  font-size: 21px;
}
.app-features h4 { font-family: var(--serif); font-size: 16px; font-weight: 700; color: var(--ink); margin-bottom: 5px; letter-spacing: .5px; }
.app-features p { font-size: 13px; color: var(--ink-2); line-height: 1.7; }
.app-download { display: flex; gap: 14px; }
.dl-btn {
  display: flex;
  align-items: center;
  gap: 12px;
  background: #FFFDF8;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 11px 22px;
  font-size: 14px;
  transition: all .25s ease;
}
.dl-btn:hover { border-color: var(--ink); transform: translateY(-2px); box-shadow: 0 12px 28px rgba(43,29,22,.08); }
.dl-icon { font-size: 23px; }
.dl-btn small { font-size: 10px; color: var(--ink-2); letter-spacing: 1px; }
.dl-btn b { font-size: 15px; color: var(--ink); font-weight: 600; }

/* ============ 服务场景 ============ */
.clients { padding: 130px 0; background: var(--bg); }
.cli-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
.cli-item {
  padding: 52px 20px 48px;
  text-align: center;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  transition: background .3s ease;
}
.cli-item:hover { background: var(--bg-warm); }
.cli-ico {
  width: 62px; height: 62px;
  margin: 0 auto 20px;
  border-radius: 50%;
  background: var(--bg-warm-2);
  display: grid;
  place-items: center;
  font-size: 26px;
  transition: transform .3s ease;
}
.cli-item:hover .cli-ico { transform: translateY(-4px); }
.cli-item h3 { font-family: var(--serif); font-size: 18px; font-weight: 700; color: var(--ink); margin-bottom: 8px; letter-spacing: 1px; }
.cli-item p { font-size: 13px; color: var(--ink-2); }

/* ============ CTA ============ */
.cta { background: var(--bg); padding: 0 0 130px; }
.cta-inner {
  background: var(--bg-warm);
  border: 1px solid var(--line);
  border-radius: 28px;
  padding: 100px 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
  background-image:
    radial-gradient(ellipse 600px 300px at 50% -20%, rgba(232, 181, 74, .14), transparent 65%);
}
.cta-inner h2 {
  font-family: var(--serif);
  font-size: clamp(32px, 4.4vw, 54px);
  font-weight: 700;
  color: var(--ink);
  line-height: 1.4;
  margin-bottom: 22px;
  letter-spacing: 2px;
}
.cta-inner h2 em { font-style: normal; color: var(--coffee); }
.cta-inner p { font-size: 15px; color: var(--ink-2); margin-bottom: 40px; letter-spacing: .5px; }
.cta-actions { display: inline-flex; gap: 16px; flex-wrap: wrap; justify-content: center; }

/* ============ 免费试豆 / 留资表单 ============ */
.trial-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
  text-align: left;
  padding: 72px 56px;
}
.trial-copy .eyebrow { margin-bottom: 18px; }
.trial-copy h2 {
  font-family: var(--serif);
  font-size: clamp(28px, 3.4vw, 44px);
  font-weight: 700;
  color: var(--ink);
  line-height: 1.35;
  margin-bottom: 18px;
  letter-spacing: 2px;
}
.trial-copy h2 em { font-style: normal; color: var(--coffee); }
.trial-copy p { font-size: 15px; color: var(--ink-2); margin-bottom: 28px; letter-spacing: .5px; }
.trial-points { list-style: none; display: grid; gap: 14px; }
.trial-points li {
  display: flex; align-items: center; gap: 12px;
  font-size: 15px; color: var(--ink); font-weight: 500;
}
.tp-ico {
  width: 34px; height: 34px; flex: none;
  display: grid; place-items: center;
  background: #fff; border: 1px solid var(--line);
  border-radius: 10px; font-size: 17px;
}

.trial-form-card {
  background: #FFFDF8;
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 30px 30px 32px;
  box-shadow: 0 24px 60px rgba(61, 36, 25, .12);
}
.tf-head { margin-bottom: 22px; }
.tf-head h3 {
  font-family: var(--serif); font-size: 22px; font-weight: 700;
  color: var(--ink); letter-spacing: 1px; margin-bottom: 6px;
}
.tf-head p { font-size: 13px; color: var(--muted); }

.lead-form { display: grid; gap: 16px; }
.field { display: grid; gap: 7px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.lead-form label { font-size: 13px; font-weight: 600; color: var(--ink-2); letter-spacing: .5px; }
.lead-form .req { color: #C0492F; }
.lead-form input,
.lead-form select,
.lead-form textarea {
  width: 100%;
  font-family: var(--sans);
  font-size: 14px; color: var(--ink);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 11px 13px;
  transition: border-color .2s, box-shadow .2s;
  outline: none;
}
.lead-form textarea { resize: vertical; min-height: 44px; }
.lead-form input:focus,
.lead-form select:focus,
.lead-form textarea:focus {
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(232, 181, 74, .22);
}
.lead-form input::placeholder,
.lead-form textarea::placeholder { color: #C2B094; }

.btn-block { width: 100%; justify-content: center; margin-top: 4px; }
.form-msg { font-size: 13px; min-height: 18px; margin: 2px 0 0; letter-spacing: .3px; }
.form-msg.ok { color: #2E7D4F; }
.form-msg.err { color: #C0492F; }

@media (max-width: 860px) {
  .trial-inner { grid-template-columns: 1fr; gap: 36px; padding: 48px 26px; }
  .field-row { grid-template-columns: 1fr; }
}

/* ============ 页脚 ============ */
.site-footer { background: var(--espresso); color: rgba(255,255,255,.8); padding: 80px 0 0; }
.footer-wrap {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 60px;
  padding-bottom: 60px;
}
.ft-col h4 {
  color: #fff;
  font-family: var(--serif);
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 22px;
  letter-spacing: 2px;
}
.ft-col ul li { margin-bottom: 12px; font-size: 14px; }
.ft-col ul li a { color: rgba(255,255,255,.62); transition: color .2s; }
.ft-col ul li a:hover { color: var(--gold); }
.ft-brand .brand-name { color: #fff; }
.ft-desc { font-size: 13px; line-height: 2; color: rgba(255,255,255,.6); margin: 18px 0 22px; max-width: 320px; }
.ft-contact { display: flex; align-items: center; gap: 9px; font-size: 13px; color: rgba(255,255,255,.62); margin-bottom: 8px; }
.ft-contact b { color: rgba(255,255,255,.92); font-weight: 500; }
.ft-bottom { border-top: 1px solid rgba(255,255,255,.1); padding: 24px 0; font-size: 12px; color: rgba(255,255,255,.4); text-align: center; letter-spacing: 1px; }

/* ============ 响应式 ============ */
@media (max-width: 1024px) {
  section { padding: 90px 0; }
  .hero { padding: 70px 0 60px; }
  .hero-grid { grid-template-columns: 1fr; gap: 60px; }
  .hero-stats { margin-top: 60px; }
  .cat-grid { grid-template-columns: 1fr 1fr; }
  .span-2 { grid-column: span 2; }
  .adv-list { grid-template-columns: 1fr 1fr; }
  .adv-item:nth-child(3n+1) { border-left: 1px solid var(--line); }
  .adv-item:nth-child(2n+1) { border-left: 0; padding-left: 0; }
  .adv-item:nth-child(-n+3) { border-bottom: 1px solid var(--line); }
  .adv-item:nth-child(4), .adv-item:nth-child(5) { border-bottom: 1px solid var(--line); }
  .adv-item:nth-child(6) { border-bottom: 0; }
  .why-card { grid-template-columns: 1fr; padding: 60px 48px; gap: 48px; }
  .app-wrap { grid-template-columns: 1fr; gap: 70px; }
  .cli-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-wrap { grid-template-columns: 1fr 1fr; gap: 40px; }
}

@media (max-width: 720px) {
  section { padding: 70px 0; }
  .container { padding: 0 22px; }
  .nav-main, .nav-cta { display: none; }
  .nav-toggle { display: flex; }
  .hero { padding: 50px 0 50px; }
  .hero-title { letter-spacing: 1px; }
  .hero-stats { grid-template-columns: 1fr; gap: 0; }
  .hs-item { padding: 28px 0 0; }
  .hs-item:not(:first-child)::before { display: none; }
  .hs-item:not(:first-child) { border-top: 1px solid var(--line); margin-top: 28px; padding-top: 28px; }
  .hs-num { font-size: 36px; }
  .cat-grid { grid-template-columns: 1fr; }
  .span-2 { grid-column: span 1; flex-direction: column; }
  .span-2 .cat-icon { margin-bottom: 0; }
  .adv-list { grid-template-columns: 1fr; }
  .adv-item { border-left: 0; padding-left: 0; border-bottom: 1px solid var(--line); }
  .adv-item:last-child { border-bottom: 0; }
  .why-card { padding: 48px 30px; }
  .why-list { grid-template-columns: 1fr; border-left: 0; }
  .why-list li { padding: 16px 0; border-bottom: 1px solid rgba(255,255,255,.1); }
  .why-list li:nth-last-child(-n+2) { border-bottom: 1px solid rgba(255,255,255,.1); }
  .why-list li:last-child { border-bottom: 0; }
  .app-features { grid-template-columns: 1fr; }
  .cli-grid { grid-template-columns: 1fr 1fr; }
  .footer-wrap { grid-template-columns: 1fr; gap: 36px; }
  .float-chip-1, .float-chip-2 { display: none; }
  .cat-note { flex-direction: column; text-align: center; gap: 20px; padding-top: 36px; margin-top: 44px; }
  .cat-note-num { font-size: 72px; }
  .cta-inner { padding: 70px 26px; }
  .hero-actions .btn { width: 100%; }
}

/* ============ 滚动动画 ============ */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .9s cubic-bezier(.16,1,.3,1), transform .9s cubic-bezier(.16,1,.3,1); }
.reveal.show { opacity: 1; transform: translateY(0); }

/* 尊重减少动效偏好 */
@media (prefers-reduced-motion: reduce) {
  .marquee-track, .float-chip { animation: none; }
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}