/* ==========================================================================
   百年沿山 · Brand Site
   视觉规范取自 嘀答清单官网（dida365.com）：
   正文 #191919 / 品牌蓝 #4772FA / 卡片圆角 30px / 内容区 1200px / 模块间距 140px
   ========================================================================== */

:root{
  --ink:#191919;
  --ink-2:#5A606B;
  --ink-3:#8C929C;

  --line:#EBEDF0;
  --line-2:#DFE3E9;

  --bg:#FFFFFF;
  --soft:#F6F7F9;

  --brand:#4772FA;
  --brand-hover:#3563F2;
  --brand-soft:#EEF2FF;
  --brand-line:#DCE4FF;

  --radius:30px;
  --radius-s:20px;

  --shadow-s:0 2px 8px rgba(17,24,39,.04);
  --shadow-m:0 12px 32px rgba(17,24,39,.07);
  --shadow-l:0 28px 70px rgba(17,24,39,.12);

  --ease:cubic-bezier(.22,.61,.36,1);
  --container:1200px;
}

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

html{
  scroll-behavior:smooth;
  -webkit-text-size-adjust:100%;
}

body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"SF Pro SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}

img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;}
::selection{background:#D7E0FF;color:#0F1B3D;}

.container{
  width:min(var(--container),90vw);
  margin-inline:auto;
}

/* ========== 通用组件 ========== */

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:50px;
  padding:0 26px;
  border:1px solid transparent;
  border-radius:999px;
  font-size:15px;
  font-weight:600;
  letter-spacing:.01em;
  cursor:pointer;
  white-space:nowrap;
  transition:background .25s var(--ease),color .25s var(--ease),
             border-color .25s var(--ease),box-shadow .25s var(--ease),
             transform .25s var(--ease);
}
.btn svg{width:16px;height:16px;flex:none;}

.btn--primary{
  background:var(--brand);
  color:#fff;
  box-shadow:0 8px 20px rgba(71,114,250,.26);
}
.btn--primary:hover{
  background:var(--brand-hover);
  transform:translateY(-1px);
  box-shadow:0 14px 30px rgba(71,114,250,.34);
}
.btn--ghost{
  background:#fff;
  color:var(--ink);
  border-color:var(--line-2);
}
.btn--ghost:hover{
  border-color:#C3CAD6;
  background:#FAFBFC;
  transform:translateY(-1px);
}
.btn--sm{height:42px;padding:0 20px;font-size:14px;}
.btn:active{transform:scale(.985);}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin:0 0 18px;
  font-size:12.5px;
  font-weight:700;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--brand);
}
.eyebrow::before{
  content:"";
  width:18px;
  height:2px;
  border-radius:2px;
  background:var(--brand);
  opacity:.55;
}

h1,h2,h3,h4{margin:0;letter-spacing:-.025em;font-weight:800;line-height:1.16;}

.s-head{max-width:730px;margin-bottom:56px;}
.s-head h2{font-size:clamp(28px,3.5vw,46px);margin-bottom:18px;}
.s-head p{
  margin:0;
  font-size:17px;
  line-height:1.72;
  color:var(--ink-2);
}
.s-head--center{margin-inline:auto;text-align:center;}

.section{padding:140px 0;position:relative;scroll-margin-top:88px;}
.section--soft{background:var(--soft);}
.section--tight{padding:110px 0;}

/* ========== 导航 ========== */

.nav{
  position:sticky;
  top:0;
  z-index:90;
  background:rgba(255,255,255,.78);
  -webkit-backdrop-filter:saturate(180%) blur(20px);
  backdrop-filter:saturate(180%) blur(20px);
  border-bottom:1px solid transparent;
  transition:border-color .3s var(--ease),background .3s var(--ease);
}
.nav.is-scrolled{
  border-bottom-color:var(--line);
  background:rgba(255,255,255,.92);
}
.nav__inner{
  height:70px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}

.brand{display:flex;align-items:center;gap:10px;flex:none;}
.brand__mark{
  width:34px;height:34px;flex:none;
  border-radius:11px;
  background:linear-gradient(160deg,#5C84FF,#3A62F0);
  display:grid;place-items:center;
  box-shadow:0 6px 14px rgba(71,114,250,.28);
  color:#fff;
  font-size:18px;
  font-weight:800;
  line-height:1;
  padding-bottom:1px;
  letter-spacing:0;
}
.brand__text{display:flex;flex-direction:column;line-height:1.15;}
.brand__name{font-size:16.5px;font-weight:800;letter-spacing:.02em;}
.brand__sub{
  font-size:9.5px;font-weight:700;letter-spacing:.22em;
  color:var(--ink-3);text-transform:uppercase;
}

.nav__links{display:flex;align-items:center;gap:34px;}
.nav__links a{
  font-size:14.5px;
  color:#41464F;
  font-weight:500;
  transition:color .2s var(--ease);
  position:relative;
}
.nav__links a::after{
  content:"";
  position:absolute;left:0;right:0;bottom:-6px;
  height:2px;border-radius:2px;
  background:var(--brand);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .28s var(--ease);
}
.nav__links a:hover{color:var(--ink);}
.nav__links a:hover::after{transform:scaleX(1);}

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

.nav__toggle{
  display:none;
  width:40px;height:40px;
  border:1px solid var(--line-2);
  border-radius:12px;
  background:#fff;
  cursor:pointer;
  padding:0;
  place-items:center;
}
.nav__toggle span{
  display:block;width:16px;height:1.5px;background:var(--ink);
  border-radius:2px;position:relative;
  transition:transform .3s var(--ease);
}
.nav__toggle span::before,
.nav__toggle span::after{
  content:"";position:absolute;left:0;width:16px;height:1.5px;
  background:var(--ink);border-radius:2px;
  transition:transform .3s var(--ease);
}
.nav__toggle span::before{top:-5px;}
.nav__toggle span::after{top:5px;}
.nav.is-open .nav__toggle span{background:transparent;}
.nav.is-open .nav__toggle span::before{transform:translateY(5px) rotate(45deg);}
.nav.is-open .nav__toggle span::after{transform:translateY(-5px) rotate(-45deg);}

/* ========== Hero ========== */

.hero{
  position:relative;
  padding:78px 0 0;
  text-align:center;
  overflow:hidden;
}
.hero::before{
  content:"";
  position:absolute;
  left:50%;top:-320px;transform:translateX(-50%);
  width:1100px;height:760px;
  background:radial-gradient(50% 50% at 50% 50%,rgba(71,114,250,.14),rgba(71,114,250,0) 72%);
  pointer-events:none;
}
.hero__inner{position:relative;}

.badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:34px;
  padding:0 15px 0 12px;
  border-radius:999px;
  background:var(--brand-soft);
  border:1px solid var(--brand-line);
  color:#3157D6;
  font-size:13px;
  font-weight:600;
  letter-spacing:.02em;
}
.badge i{
  width:6px;height:6px;border-radius:50%;
  background:var(--brand);
  box-shadow:0 0 0 4px rgba(71,114,250,.14);
}

.hero h1{
  margin:24px 0 24px;
  font-size:clamp(40px,6vw,76px);
  line-height:1.08;
  letter-spacing:-.035em;
}
.hero h1 em{
  font-style:normal;
  color:var(--brand);
}

.hero__lede{
  max-width:660px;
  margin:0 auto 36px;
  font-size:clamp(16px,1.4vw,18.5px);
  line-height:1.78;
  color:var(--ink-2);
}
.hero__actions{
  display:flex;
  justify-content:center;
  gap:14px;
  flex-wrap:wrap;
}

.hero__visual{
  position:relative;
  margin-top:70px;
  padding-bottom:0;
}
.hero__shot{
  position:relative;
  border-radius:var(--radius);
  overflow:hidden;
  background:var(--soft);
  box-shadow:var(--shadow-l);
  aspect-ratio:16/8.4;
}
.hero__shot img{
  width:100%;height:100%;
  object-fit:cover;
  object-position:center 64%;
}

.float-card{
  position:absolute;
  display:flex;
  align-items:center;
  gap:12px;
  padding:14px 20px 14px 16px;
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border:1px solid rgba(255,255,255,.9);
  border-radius:18px;
  box-shadow:0 16px 40px rgba(17,24,39,.12);
  text-align:left;
}
.float-card__ico{
  width:38px;height:38px;flex:none;
  border-radius:12px;
  background:var(--brand-soft);
  display:grid;place-items:center;
  color:var(--brand);
}
.float-card__ico svg{width:18px;height:18px;}
.float-card b{
  display:block;
  font-size:17px;
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.25;
}
.float-card span{
  display:block;
  font-size:12.5px;
  color:var(--ink-3);
  line-height:1.4;
}
.float-card--tl{left:-14px;top:38px;}
.float-card--br{right:-14px;bottom:38px;}

/* ========== 数据条 ========== */

.stats{
  display:grid;
  grid-template-columns:repeat(5,1fr);
  gap:0;
  margin-top:0;
  padding:46px 0 0;
  border-top:1px solid var(--line);
  margin-top:64px;
}
.stat{
  text-align:center;
  padding:0 12px;
  border-right:1px solid var(--line);
}
.stat:last-child{border-right:0;}
.stat b{
  display:block;
  font-size:clamp(24px,2.7vw,36px);
  font-weight:800;
  letter-spacing:-.03em;
  line-height:1.15;
  font-variant-numeric:tabular-nums;
}
.stat b small{font-size:.5em;font-weight:700;margin-left:2px;}
.stat span{
  display:block;
  margin-top:6px;
  font-size:13px;
  color:var(--ink-3);
  letter-spacing:.02em;
}

/* ========== 品牌故事 ========== */

.story{
  display:grid;
  grid-template-columns:.92fr 1.08fr;
  gap:72px;
  align-items:start;
}
.story__media{
  position:sticky;
  top:104px;
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--shadow-m);
  background:var(--soft);
  aspect-ratio:4/4.1;
}
.story__media img{
  width:100%;height:100%;object-fit:cover;
}
.story__cap{
  position:absolute;
  left:22px;bottom:18px;
  padding:7px 14px;
  border-radius:999px;
  background:rgba(255,255,255,.86);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  font-size:12px;
  color:#3D434D;
  letter-spacing:.02em;
}
.story__body .s-head{margin-bottom:20px;}
.story__body > p{
  margin:0 0 34px;
  font-size:16.5px;
  line-height:1.85;
  color:var(--ink-2);
}

.timeline{
  border-top:1px solid var(--line);
}
.tl{
  display:grid;
  grid-template-columns:92px 1fr;
  gap:22px;
  padding:24px 0;
  border-bottom:1px solid var(--line);
  transition:background .25s var(--ease);
}
.tl__year{
  font-size:14px;
  font-weight:800;
  color:var(--brand);
  font-variant-numeric:tabular-nums;
  letter-spacing:.01em;
  padding-top:2px;
  white-space:nowrap;
}
.tl__t{
  font-size:16.5px;
  font-weight:700;
  margin:0 0 6px;
  letter-spacing:-.01em;
}
.tl__d{
  margin:0;
  font-size:14.5px;
  line-height:1.7;
  color:var(--ink-2);
}

.quote{
  position:relative;
  margin:36px 0 0;
  padding:30px 32px 28px;
  background:var(--brand-soft);
  border:1px solid var(--brand-line);
  border-radius:24px;
}
.quote::before{
  content:"“";
  position:absolute;
  top:6px;left:20px;
  font-family:Georgia,serif;
  font-size:56px;
  line-height:1;
  color:var(--brand);
  opacity:.28;
}
.quote p{
  position:relative;
  margin:0 0 16px;
  padding-left:12px;
  font-size:16px;
  line-height:1.8;
  color:#1E2C55;
  font-weight:500;
}
.quote footer{
  padding-left:12px;
  font-size:13.5px;
  color:#56679B;
}
.quote footer b{color:#2A3F7A;font-weight:700;}

/* ========== 口味家族 ========== */

.grid-4{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}

.flavor{
  background:#fff;
  border:1px solid var(--line);
  border-radius:26px;
  overflow:hidden;
  transition:transform .35s var(--ease),box-shadow .35s var(--ease),border-color .35s var(--ease);
}
.flavor:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-m);
  border-color:var(--line-2);
}
.flavor__thumb{
  height:186px;
  display:grid;
  place-items:center;
  position:relative;
  overflow:hidden;
}
.flavor__thumb::after{
  content:"";
  position:absolute;
  inset:auto 0 0 0;
  height:56px;
  background:linear-gradient(to top,rgba(255,255,255,.55),rgba(255,255,255,0));
  pointer-events:none;
}
.flavor__thumb svg{
  width:84px;
  height:auto;
  filter:drop-shadow(0 14px 22px rgba(17,24,39,.14));
  transition:transform .45s var(--ease);
}
.flavor:hover .flavor__thumb svg{transform:translateY(-6px) rotate(-3deg);}

.flavor__body{padding:20px 22px 22px;}
.flavor__title{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:17.5px;
  font-weight:800;
  letter-spacing:-.01em;
  margin:0 0 8px;
}
.tag{
  display:inline-flex;
  align-items:center;
  height:20px;
  padding:0 7px;
  border-radius:6px;
  font-size:10.5px;
  font-weight:700;
  letter-spacing:.03em;
  background:var(--brand-soft);
  color:var(--brand);
  flex:none;
}
.tag--warm{background:#FFF3E4;color:#B4741C;}

.flavor__desc{
  margin:0 0 16px;
  font-size:13.5px;
  line-height:1.7;
  color:var(--ink-2);
  min-height:46px;
}
.flavor__meta{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-top:14px;
  border-top:1px dashed var(--line);
  font-size:12px;
  color:var(--ink-3);
  letter-spacing:.02em;
}
.flavor__meta b{color:var(--ink);font-weight:700;font-variant-numeric:tabular-nums;}

.flavors__note{
  margin:28px 0 0;
  font-size:13px;
  color:var(--ink-3);
  text-align:center;
}

/* ========== 工艺 ========== */

.craft{
  display:grid;
  grid-template-columns:.95fr 1.05fr;
  gap:76px;
  align-items:center;
}
.craft__media{
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--shadow-m);
  aspect-ratio:4/4.2;
  background:var(--soft);
}
.craft__media img{width:100%;height:100%;object-fit:cover;}

.steps{display:grid;gap:2px;}
.step{
  display:grid;
  grid-template-columns:56px 1fr;
  gap:20px;
  padding:26px 0;
  border-bottom:1px solid var(--line);
}
.step:first-child{padding-top:0;}
.step:last-child{border-bottom:0;padding-bottom:0;}
.step__n{
  font-size:13px;
  font-weight:800;
  color:var(--brand);
  letter-spacing:.06em;
  font-variant-numeric:tabular-nums;
  padding-top:3px;
}
.step h3{
  font-size:18px;
  font-weight:800;
  margin-bottom:8px;
}
.step p{
  margin:0;
  font-size:14.5px;
  line-height:1.75;
  color:var(--ink-2);
}

/* ========== 品质承诺 ========== */

.quads{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.feature{
  padding:30px 26px 32px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:24px;
  transition:transform .35s var(--ease),box-shadow .35s var(--ease);
}
.feature:hover{transform:translateY(-4px);box-shadow:var(--shadow-m);}
.feature__ico{
  width:46px;height:46px;
  border-radius:14px;
  display:grid;place-items:center;
  background:var(--brand-soft);
  color:var(--brand);
  margin-bottom:20px;
}
.feature__ico svg{width:22px;height:22px;}
.feature h3{font-size:16.5px;font-weight:800;margin-bottom:8px;}
.feature p{margin:0;font-size:14px;line-height:1.72;color:var(--ink-2);}

/* ========== 渠道 ========== */

.channels{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:20px;
  margin-bottom:72px;
}
.channel{
  padding:34px 30px 36px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:26px;
  transition:transform .35s var(--ease),box-shadow .35s var(--ease);
}
.channel:hover{transform:translateY(-4px);box-shadow:var(--shadow-m);}
.channel__tag{
  display:inline-block;
  font-size:11.5px;
  font-weight:700;
  letter-spacing:.12em;
  color:var(--brand);
  text-transform:uppercase;
  margin-bottom:14px;
}
.channel h3{font-size:20px;font-weight:800;margin-bottom:10px;}
.channel p{margin:0;font-size:14.5px;line-height:1.75;color:var(--ink-2);}

.reach{
  display:flex;
  align-items:center;
  gap:14px;
  flex-wrap:wrap;
  padding:22px 26px;
  border-radius:20px;
  background:var(--soft);
  border:1px solid var(--line);
  font-size:14px;
  color:var(--ink-2);
}
.reach strong{color:var(--ink);font-weight:700;}
.reach .dot{width:4px;height:4px;border-radius:50%;background:#C4C9D2;}

/* ========== 口碑 ========== */

.voices{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:20px;
}
.voice{
  display:flex;
  flex-direction:column;
  padding:32px 30px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:26px;
  transition:transform .35s var(--ease),box-shadow .35s var(--ease);
}
.voice:hover{transform:translateY(-4px);box-shadow:var(--shadow-m);}
.voice p{
  margin:0 0 24px;
  font-size:15px;
  line-height:1.8;
  color:#23272E;
  flex:1;
}
.voice__who{display:flex;align-items:center;gap:12px;}
.voice__ava{
  width:38px;height:38px;
  border-radius:50%;
  background:#DCE4FF;
  color:#2F55D8;
  display:grid;place-items:center;
  font-size:15px;
  font-weight:800;
  flex:none;
}
.voice__who__text b{display:block;font-size:14px;font-weight:700;line-height:1.35;}
.voice__who__text span{display:block;margin-top:3px;font-size:12.5px;color:var(--ink-3);line-height:1.45;}

.press{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:40px;
  flex-wrap:wrap;
  margin-top:56px;
  padding-top:44px;
  border-top:1px solid var(--line);
  font-size:14px;
  font-weight:600;
  color:#9AA0AA;
  letter-spacing:.02em;
}
.press span::before{
  content:"";
  display:inline-block;
  width:5px;height:5px;
  border-radius:50%;
  background:#D3D7DE;
  margin-right:10px;
  vertical-align:2px;
}

/* ========== CTA / 联系 ========== */

.cta{
  position:relative;
  overflow:hidden;
  border-radius:36px;
  background:linear-gradient(150deg,#3E68F6 0%,#4772FA 42%,#5E86FF 100%);
  color:#fff;
  padding:64px 64px 60px;
  display:grid;
  grid-template-columns:1fr .92fr;
  gap:64px;
  align-items:center;
  box-shadow:0 30px 80px rgba(58,101,240,.28);
}
.cta::before{
  content:"";
  position:absolute;
  right:-140px;top:-160px;
  width:520px;height:520px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.22),rgba(255,255,255,0) 68%);
  pointer-events:none;
}
.cta__copy{position:relative;}
.cta__copy h2{
  font-size:clamp(26px,3vw,40px);
  line-height:1.18;
  margin-bottom:18px;
  color:#fff;
}
.cta__copy p{
  margin:0 0 32px;
  font-size:15.5px;
  line-height:1.8;
  color:rgba(255,255,255,.82);
  max-width:420px;
}
.cta__facts{display:grid;gap:14px;}
.cta__fact{
  display:flex;
  gap:12px;
  font-size:14px;
  color:rgba(255,255,255,.9);
  line-height:1.6;
}
.cta__fact svg{width:17px;height:17px;flex:none;margin-top:3px;opacity:.85;}
.cta__fact b{font-weight:700;color:#fff;}

.form{
  position:relative;
  background:#fff;
  border-radius:24px;
  padding:32px 32px 34px;
  color:var(--ink);
  box-shadow:0 20px 50px rgba(19,34,89,.18);
}
.form__row{display:grid;grid-template-columns:1fr 1fr;gap:14px;}
.field{margin-bottom:16px;}
.field label{
  display:block;
  font-size:12.5px;
  font-weight:700;
  color:#5A606B;
  margin-bottom:7px;
  letter-spacing:.02em;
}
.field input,
.field select,
.field textarea{
  width:100%;
  height:46px;
  padding:0 14px;
  border:1px solid var(--line-2);
  border-radius:12px;
  background:#FAFBFC;
  font-size:14.5px;
  color:var(--ink);
  font-family:inherit;
  outline:none;
  transition:border-color .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease);
  appearance:none;
}
.field select{
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 8' fill='none'%3E%3Cpath d='m1 1.5 5 5 5-5' stroke='%235A606B' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat:no-repeat;
  background-position:right 15px center;
  background-size:11px 8px;
  padding-right:38px;
  cursor:pointer;
}
.field textarea{height:88px;padding:12px 14px;resize:vertical;line-height:1.6;}
.field input:focus,
.field select:focus,
.field textarea:focus{
  border-color:var(--brand);
  background:#fff;
  box-shadow:0 0 0 3px rgba(71,114,250,.14);
}
.field input::placeholder,
.field textarea::placeholder{color:#AEB3BC;}
.form .btn{width:100%;margin-top:6px;}
.form__tip{
  margin:14px 0 0;
  font-size:11.5px;
  color:#A6ABB4;
  text-align:center;
  line-height:1.6;
}

/* ========== Footer ========== */

.footer{
  border-top:1px solid var(--line);
  background:#fff;
  padding:68px 0 40px;
}
.footer__top{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:48px;
  padding-bottom:52px;
}
.footer__about p{
  margin:18px 0 0;
  font-size:13.5px;
  line-height:1.8;
  color:var(--ink-2);
  max-width:280px;
}
.footer h4{
  font-size:13px;
  font-weight:700;
  letter-spacing:.1em;
  text-transform:uppercase;
  color:#9AA0AA;
  margin:4px 0 18px;
}
.footer ul{margin:0;padding:0;list-style:none;}
.footer li{margin-bottom:11px;}
.footer li a{font-size:14px;color:#4C525C;transition:color .2s var(--ease);}
.footer li a:hover{color:var(--brand);}
.footer li span{font-size:13.5px;color:var(--ink-2);line-height:1.7;display:block;}

.footer__bottom{
  display:flex;
  justify-content:space-between;
  align-items:flex-start;
  gap:24px;
  flex-wrap:wrap;
  padding-top:28px;
  border-top:1px solid var(--line);
  font-size:12.5px;
  color:#9AA0AA;
  line-height:1.8;
}
.footer__bottom p{margin:0;}
.footer__bottom .fine{max-width:640px;font-size:11.5px;color:#AEB3BC;margin-top:6px;}

/* ========== 动效 ========== */

.js [data-reveal]{
  opacity:0;
  transform:translateY(20px);
  transition:opacity .8s var(--ease),transform .8s var(--ease);
}
.js [data-reveal].is-in{opacity:1;transform:none;}
[data-reveal][data-delay="1"]{transition-delay:.08s;}
[data-reveal][data-delay="2"]{transition-delay:.16s;}
[data-reveal][data-delay="3"]{transition-delay:.24s;}

.toast{
  position:fixed;
  left:50%;bottom:36px;
  transform:translate(-50%,20px);
  z-index:200;
  display:flex;
  align-items:center;
  gap:10px;
  padding:13px 22px;
  border-radius:14px;
  background:#191919;
  color:#fff;
  font-size:14px;
  font-weight:500;
  box-shadow:0 18px 44px rgba(0,0,0,.24);
  opacity:0;
  pointer-events:none;
  transition:opacity .3s var(--ease),transform .3s var(--ease);
}
.toast.is-on{opacity:1;transform:translate(-50%,0);}
.toast svg{width:16px;height:16px;color:#6EE7A8;flex:none;}

/* ========== 响应式 ========== */

@media (max-width:1080px){
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .quads{grid-template-columns:repeat(2,1fr);}
  .story{gap:56px;}
  .craft{gap:52px;}
  .cta{padding:52px 44px;gap:44px;}
  .footer__top{grid-template-columns:1.2fr 1fr 1fr;}
  .footer__about{grid-column:1/-1;}
  .footer__about p{max-width:none;}
}

@media (max-width:900px){
  .section{padding:96px 0;}
  .nav__links,.nav__cta .btn--ghost{display:none;}
  .nav__toggle{display:grid;}
  .nav.is-open .nav__links{
    display:flex;
    position:absolute;
    left:0;right:0;top:70px;
    flex-direction:column;
    align-items:flex-start;
    gap:0;
    padding:10px 5vw 22px;
    background:#fff;
    border-bottom:1px solid var(--line);
    box-shadow:0 20px 40px rgba(17,24,39,.06);
  }
  .nav.is-open .nav__links a{
    width:100%;
    padding:14px 0;
    font-size:16px;
    border-bottom:1px solid var(--line);
  }
  .nav.is-open .nav__links a::after{display:none;}

  .story{grid-template-columns:1fr;}
  .story__media{position:static;aspect-ratio:16/11;}
  .craft{grid-template-columns:1fr;}
  .craft__media{aspect-ratio:16/11;order:2;}
  .craft .steps{order:1;}

  .channels{grid-template-columns:1fr;gap:16px;margin-bottom:52px;}
  .voices{grid-template-columns:1fr;}
  .stats{grid-template-columns:repeat(3,1fr);row-gap:34px;}
  .stat:nth-child(3n){border-right:0;}

  .cta{grid-template-columns:1fr;padding:40px 28px;border-radius:28px;}
  .float-card--tl{left:12px;top:16px;transform:scale(.92);transform-origin:left top;}
  .float-card--br{right:12px;bottom:16px;transform:scale(.92);transform-origin:right bottom;}
}

@media (max-width:620px){
  .hero{padding-top:48px;}
  .hero h1{font-size:clamp(34px,9vw,44px);}
  .hero__visual{margin-top:48px;}
  .hero__shot{aspect-ratio:4/3.6;border-radius:24px;}
  .float-card{display:none;}
  .stats{padding-top:36px;margin-top:48px;}
  .grid-4{grid-template-columns:1fr;gap:14px;}
  .quads{grid-template-columns:1fr;}
  .flavor{display:grid;grid-template-columns:108px 1fr;align-items:stretch;}
  .flavor__thumb{height:auto;min-height:130px;}
  .flavor__thumb svg{width:52px;}
  .flavor__thumb::after{display:none;}
  .flavor__body{padding:16px 18px 16px;}
  .flavor__title{font-size:16px;margin-bottom:6px;}
  .flavor__desc{font-size:13px;min-height:0;margin-bottom:12px;}
  .flavor__meta{padding-top:10px;}
  .tl{grid-template-columns:1fr;gap:8px;padding:20px 0;}
  .cta{padding:34px 22px;}
  .form{padding:24px 20px 26px;}
  .form__row{grid-template-columns:1fr;}
  .footer__top{grid-template-columns:1fr 1fr;gap:32px;}
  .press{gap:18px 26px;justify-content:flex-start;}
  .section{padding:80px 0;}
  .s-head{margin-bottom:40px;}
}

@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
  [data-reveal]{opacity:1;transform:none;}
}

/* ==========================================================================
   优化补充：键盘焦点 / 跳过导航 / 经销问答 / 移动端咨询条
   ========================================================================== */

:where(a,button,summary,input,select,textarea,[tabindex]):focus-visible{
  outline:2px solid var(--brand);
  outline-offset:3px;
}
:where(a,button,summary,input,select,textarea):focus:not(:focus-visible){outline:none;}

.skip{
  position:fixed;
  top:-120px;left:24px;
  z-index:300;
  padding:12px 20px;
  border-radius:12px;
  background:var(--brand);
  color:#fff;
  font-size:14px;
  font-weight:600;
  box-shadow:0 10px 26px rgba(71,114,250,.34);
  transition:top .22s var(--ease);
}
.skip:focus{top:16px;}

.hero__shot picture,
.story__media picture,
.craft__media picture{display:block;width:100%;height:100%;}

.nav__links a.is-active{color:var(--ink);}
.nav__links a.is-active::after{transform:scaleX(1);}

/* ---------- 经销问答 ---------- */

.faq-section{border-top:1px solid var(--line);}

.faq{
  display:grid;
  grid-template-columns:.85fr 1.15fr;
  gap:80px;
  align-items:start;
}
.faq__head{position:sticky;top:104px;}
.faq__head .s-head{margin-bottom:0;}
.faq__head .s-head p{max-width:340px;}

.faq__list{border-top:1px solid var(--line);}
.faq details{border-bottom:1px solid var(--line);}
.faq summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  padding:24px 0;
  cursor:pointer;
  list-style:none;
  font-size:16.5px;
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--ink);
  transition:color .2s var(--ease);
}
.faq summary::-webkit-details-marker{display:none;}
.faq summary:hover,
.faq details[open] summary{color:var(--brand);}
.faq summary .ico{
  position:relative;
  width:26px;height:26px;
  flex:none;
  border-radius:50%;
  border:1px solid var(--line-2);
  transition:background .3s var(--ease),border-color .3s var(--ease),transform .35s var(--ease);
}
.faq summary .ico::before,
.faq summary .ico::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  background:#41464F;
  border-radius:2px;
  transform:translate(-50%,-50%);
  transition:background .3s var(--ease),opacity .3s var(--ease),transform .3s var(--ease);
}
.faq summary .ico::before{width:11px;height:1.6px;}
.faq summary .ico::after{width:1.6px;height:11px;}

.faq details[open] summary .ico{
  background:var(--brand);
  border-color:var(--brand);
  transform:rotate(180deg);
}
.faq details[open] summary .ico::before{background:#fff;}
.faq details[open] summary .ico::after{opacity:0;background:#fff;}

.faq__a{
  padding:0 52px 26px 0;
  font-size:14.5px;
  line-height:1.85;
  color:var(--ink-2);
}
.faq details[open] .faq__a{animation:faqIn .32s var(--ease) both;}
@keyframes faqIn{
  from{opacity:0;transform:translateY(-5px);}
  to{opacity:1;transform:none;}
}
.faq__a b{color:var(--ink);font-weight:700;}

/* ---------- 移动端咨询条 ---------- */

.dock{
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:80;
  display:none;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:11px 18px calc(11px + env(safe-area-inset-bottom));
  background:rgba(255,255,255,.94);
  -webkit-backdrop-filter:saturate(180%) blur(18px);
  backdrop-filter:saturate(180%) blur(18px);
  border-top:1px solid var(--line);
  box-shadow:0 -8px 30px rgba(17,24,39,.06);
  transform:translateY(120%);
  visibility:hidden;
  transition:transform .38s var(--ease),visibility .38s var(--ease);
}
.dock.is-on{transform:none;visibility:visible;}
.dock__info b{
  display:block;
  font-size:14px;
  font-weight:800;
  line-height:1.3;
  letter-spacing:-.01em;
}
.dock__info span{
  display:block;
  margin-top:1px;
  font-size:11.5px;
  color:var(--ink-3);
}

@media (max-width:900px){
  .dock{display:flex;}
  .nav__cta .btn--primary{transition:opacity .25s var(--ease),transform .25s var(--ease);}
  .nav.is-docked .nav__cta .btn--primary{opacity:0;transform:scale(.92);pointer-events:none;}
  body.has-dock{padding-bottom:76px;}
  .faq{grid-template-columns:1fr;gap:32px;}
  .faq__head{position:static;}
  .faq__head .s-head p{max-width:none;}
  .faq summary{font-size:15.5px;padding:20px 0;gap:16px;}
  .toast{bottom:92px;}
  .faq__a{padding:0 0 22px;font-size:14px;}
}