/* ==========================================================================
   WELOVEVpin 唯爱唯品 · 品牌官网
   主色取自产品海报：#BA0166  辅色：#8A0049 / #F8E3ED / #E7A9C2
   ========================================================================== */

:root{
  --brand:      #BA0166;
  --brand-deep: #8A0049;
  --brand-dark: #66002F;
  --pink-50:    #FDF5F9;
  --pink-100:   #F8E3ED;
  --pink-200:   #EFC6DA;
  --ring:       #E7A9C2;
  --paper:      #FFFCFD;
  --ink:        #241419;
  --ink-2:      #4A3038;
  --muted:      #82666F;
  --line:       rgba(186,1,102,.14);
  --line-soft:  rgba(36,20,25,.09);

  --serif: "Songti SC","Source Han Serif SC","Noto Serif CJK SC","STSong","SimSun",serif;
  --sans: -apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;

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

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

html{
  scroll-behavior:smooth;
  scroll-padding-top:96px;
  -webkit-text-size-adjust:100%;
}

body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

img{ display:block; max-width:100%; height:auto; }
a{ color:inherit; text-decoration:none; }
ul,ol,dl,dd{ margin:0; padding:0; list-style:none; }
h1,h2,h3,p,figure{ margin:0; }
button{ font:inherit; }

.wrap{
  width:100%;
  max-width:var(--wrap);
  margin:0 auto;
  padding:0 44px;
}

.skip{
  position:absolute; left:-9999px; top:0;
  background:#fff; color:var(--brand);
  padding:12px 20px; z-index:999;
}
.skip:focus{ left:16px; top:16px; }

/* ---------- 通用文字 ---------- */
.eyebrow{
  font-size:11px;
  letter-spacing:.36em;
  text-transform:uppercase;
  color:var(--brand);
  font-weight:600;
  margin-bottom:22px;
}
.eyebrow--light{ color:rgba(255,255,255,.72); }

h2{
  font-family:var(--serif);
  font-weight:400;
  font-size:clamp(28px,3.3vw,44px);
  line-height:1.34;
  letter-spacing:.02em;
  color:var(--brand-deep);
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  height:52px; padding:0 34px;
  font-size:14px; letter-spacing:.12em;
  border:1px solid transparent;
  transition:background .35s var(--ease), color .35s var(--ease), border-color .35s var(--ease), transform .35s var(--ease);
}
.btn-solid{ background:#fff; color:var(--brand); }
.btn-solid:hover{ background:var(--pink-100); transform:translateY(-2px); }
.btn-ghost{ border-color:rgba(255,255,255,.5); color:#fff; }
.btn-ghost:hover{ border-color:#fff; background:rgba(255,255,255,.12); transform:translateY(-2px); }
.btn-white{ background:#fff; color:var(--brand); }
.btn-white:hover{ transform:translateY(-2px); }
.btn-outline{ border-color:rgba(255,255,255,.55); color:#fff; }
.btn-outline:hover{ background:rgba(255,255,255,.14); transform:translateY(-2px); }

/* ==========================================================================
   NAV
   ========================================================================== */
.nav{
  position:fixed; inset:0 0 auto 0; z-index:100;
  height:78px;
  display:flex; align-items:center;
  transition:background .45s var(--ease), box-shadow .45s var(--ease), height .45s var(--ease);
}
.nav.is-solid{
  height:66px;
  background:rgba(186,1,102,.97);
  box-shadow:0 1px 0 rgba(255,255,255,.14), 0 18px 40px -28px rgba(102,0,47,.8);
  backdrop-filter:blur(12px);
}
.nav-inner{
  display:flex; align-items:center; justify-content:space-between;
  gap:32px;
}
.brand-link img{
  width:172px; height:auto;
  transition:width .45s var(--ease), opacity .3s;
}
.nav.is-solid .brand-link img{ width:150px; }

.nav-links{
  display:flex; align-items:center; gap:34px;
  margin-left:auto;
}
.nav-links a{
  position:relative;
  font-size:13.5px; letter-spacing:.1em;
  color:rgba(255,255,255,.86);
  padding:6px 0;
  transition:color .3s;
}
.nav-links a::after{
  content:""; position:absolute; left:0; right:0; bottom:0;
  height:1px; background:#fff;
  transform:scaleX(0); transform-origin:left;
  transition:transform .4s var(--ease);
}
.nav-links a:hover{ color:#fff; }
.nav-links a:hover::after{ transform:scaleX(1); }

.nav-cta{
  height:38px; padding:0 22px;
  display:inline-flex; align-items:center;
  font-size:12.5px; letter-spacing:.14em;
  border:1px solid rgba(255,255,255,.6);
  color:#fff;
  transition:background .35s var(--ease), color .35s var(--ease);
}
.nav-cta:hover{ background:#fff; color:var(--brand); }

/* ==========================================================================
   HERO
   ========================================================================== */
.hero{
  position:relative;
  background:
    radial-gradient(120% 90% at 78% 12%, #D4006F 0%, rgba(212,0,111,0) 58%),
    radial-gradient(90% 70% at 8% 92%, #97004F 0%, rgba(151,0,79,0) 62%),
    linear-gradient(162deg, #C0006B 0%, #B30166 46%, #9C0058 100%);
  color:#fff;
  padding:150px 0 132px;
  overflow:hidden;
}
.hero::before{
  content:"";
  position:absolute; inset:0;
  background-image:
    radial-gradient(circle at 22% 26%, rgba(255,255,255,.10) 0, rgba(255,255,255,0) 34%),
    radial-gradient(circle at 62% 78%, rgba(255,255,255,.08) 0, rgba(255,255,255,0) 40%);
  pointer-events:none;
}
.hero-fade{
  position:absolute; inset:auto 0 0 0; height:180px;
  background:linear-gradient(to bottom, rgba(156,0,88,0), rgba(255,252,253,.06) 60%, var(--paper) 100%);
  pointer-events:none;
}
.hero-grid{
  position:relative;
  display:grid;
  grid-template-columns:1.06fr .94fr;
  align-items:center;
  gap:56px;
}

.hero .eyebrow{ color:rgba(255,255,255,.7); }

.hero h1{
  font-family:var(--serif);
  font-weight:400;
  font-size:clamp(34px,4.6vw,62px);
  line-height:1.28;
  letter-spacing:.02em;
  text-shadow:0 2px 30px rgba(0,0,0,.12);
}
.hero h1 .h1-line{ display:block; }
.hero h1 em{
  display:block;
  font-style:normal;
  color:#FFDCEB;
  letter-spacing:.14em;
  margin-top:6px;
}
.hero-latin{
  margin-top:26px;
  font-size:10.5px;
  letter-spacing:.42em;
  color:rgba(255,255,255,.56);
}

.hero-facts{
  display:flex; flex-wrap:wrap;
  gap:0;
  margin-top:42px;
  border-top:1px solid rgba(255,255,255,.22);
  padding-top:28px;
}
.hero-facts li{
  flex:1 1 0;
  min-width:112px;
  padding-right:20px;
  border-right:1px solid rgba(255,255,255,.18);
}
.hero-facts li:last-child{ border-right:0; }
.hero-facts b{
  display:block;
  font-family:var(--serif);
  font-weight:400;
  font-size:30px;
  line-height:1.2;
  color:#fff;
}
.hero-facts b small{ font-size:16px; margin-left:1px; }
.hero-facts span{
  display:block;
  margin-top:6px;
  font-size:12px;
  letter-spacing:.08em;
  color:rgba(255,255,255,.66);
}

.hero-cta{
  display:flex; flex-wrap:wrap; gap:14px;
  margin-top:44px;
}

/* 白色圆盘 + 产品 */
.hero-visual{
  --disc: clamp(268px, 32vw, 408px);
  position:relative;
  display:flex; flex-direction:column; align-items:center;
}
.disc{
  position:relative;
  width:var(--disc);
  height:var(--disc);
  aspect-ratio:1;
  border-radius:50%;
  background:#fff;
  display:grid; place-items:center;
  overflow:hidden;
  box-shadow:0 50px 90px -44px rgba(0,0,0,.55), 0 0 0 1px rgba(255,255,255,.5);
}
.disc-product{
  position:relative;
  height:calc(var(--disc) * .88);
  margin-top:2.5%;
  width:auto;
  max-width:none;
  filter:drop-shadow(0 18px 22px rgba(102,0,47,.22));
  transition:transform .8s var(--ease);
}
.hero-visual:hover .disc-product{ transform:translateY(-6px) rotate(-1deg); }

.disc-ring{
  position:absolute;
  top:50%; left:50%;
  width:calc(var(--disc) + 46px);
  height:calc(var(--disc) + 46px);
  margin:calc((var(--disc) + 46px) / -2) 0 0 calc((var(--disc) + 46px) / -2);
  border:1px solid rgba(255,255,255,.26);
  border-radius:50%;
  pointer-events:none;
}
.disc-note{
  margin-top:26px;
  font-size:12px;
  letter-spacing:.16em;
  color:rgba(255,255,255,.7);
}
.disc-note span{ letter-spacing:.24em; color:rgba(255,255,255,.45); margin-right:10px; }
.disc-note i{ font-style:normal; margin:0 4px; opacity:.4; }

/* ==========================================================================
   STRIP
   ========================================================================== */
.strip{
  position:relative; z-index:5;
  margin-top:-58px;
}
.strip-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  background:#fff;
  box-shadow:0 30px 60px -40px rgba(102,0,47,.45);
  border:1px solid var(--line-soft);
}
.strip-item{
  padding:34px 30px 30px;
  border-right:1px solid var(--line-soft);
}
.strip-item:last-child{ border-right:0; }
.strip-item b{
  display:block;
  font-family:var(--serif);
  font-weight:400;
  font-size:34px;
  line-height:1.1;
  color:var(--brand);
}
.strip-item b small{ font-size:18px; }
.strip-item b i{ font-style:normal; font-size:13px; letter-spacing:.1em; color:var(--brand); margin-left:4px; }
.strip-item span{
  display:block;
  margin-top:8px;
  font-size:12.5px;
  letter-spacing:.06em;
  color:var(--muted);
}

/* ==========================================================================
   SECTION 基础
   ========================================================================== */
.section{ padding:118px 0; }
.sec-head{ text-align:center; max-width:720px; margin:0 auto 72px; }
.sec-head--left{ text-align:left; margin:0 0 58px; }
.sec-lead{
  margin-top:22px;
  font-size:15.5px;
  line-height:2;
  color:var(--muted);
}

/* ==========================================================================
   成分解析
   ========================================================================== */
.components{ background:var(--paper); }
.plus{
  font-family:var(--sans);
  font-size:.72em;
  letter-spacing:0;
  color:var(--brand);
  vertical-align:.08em;
}

.ing-grid{
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  gap:52px 40px;
}
.ing{
  flex:0 0 calc((100% - 120px) / 4);
  display:flex; flex-direction:column; align-items:center;
  text-align:center;
  cursor:default;
}
.ing-img{
  position:relative;
  display:block;
  width:100%;
  max-width:178px;
  aspect-ratio:1;
  padding:5px;
  border:1px solid var(--ring);
  border-radius:50%;
  transition:border-color .45s var(--ease), transform .45s var(--ease);
}
.ing-img img{
  width:100%; height:100%;
  object-fit:cover;
  border-radius:50%;
  transition:transform .6s var(--ease);
}
.ing:hover .ing-img{ border-color:var(--brand); transform:translateY(-4px); }
.ing:hover .ing-img img{ transform:scale(1.05); }

.ing-name{
  display:block;
  margin-top:18px;
  font-size:14px;
  line-height:1.65;
  letter-spacing:.02em;
  color:var(--ink-2);
  min-height:2.6em;
}
.ing-cat{
  display:inline-block;
  margin-top:8px;
  font-size:10px;
  letter-spacing:.24em;
  color:var(--muted);
  text-transform:uppercase;
  opacity:.7;
}
.ing-cat.pat{
  color:var(--brand);
  opacity:1;
  padding:2px 10px;
  border:1px solid rgba(186,1,102,.28);
  border-radius:999px;
  letter-spacing:.16em;
}

.ing-foot{
  margin-top:64px;
  text-align:center;
  font-size:12px;
  letter-spacing:.06em;
  color:var(--muted);
  opacity:.8;
}

/* ==========================================================================
   配方逻辑
   ========================================================================== */
.logic{
  background:
    linear-gradient(180deg, var(--pink-50) 0%, #FFF7FA 100%);
  border-top:1px solid var(--line-soft);
  border-bottom:1px solid var(--line-soft);
}
.logic-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:26px;
}
.logic-card{
  position:relative;
  background:#fff;
  padding:44px 36px 40px;
  border:1px solid var(--line-soft);
  transition:transform .5s var(--ease), box-shadow .5s var(--ease);
}
.logic-card::after{
  content:"";
  position:absolute; left:0; top:0; right:0; height:3px;
  background:linear-gradient(90deg, var(--brand), var(--pink-200));
  transform:scaleX(0); transform-origin:left;
  transition:transform .55s var(--ease);
}
.logic-card:hover{ transform:translateY(-6px); box-shadow:0 34px 60px -40px rgba(102,0,47,.42); }
.logic-card:hover::after{ transform:scaleX(1); }

.logic-no{
  font-family:var(--serif);
  font-size:13px;
  letter-spacing:.2em;
  color:var(--brand);
  opacity:.6;
}
.logic-thumbs{
  display:flex; gap:10px;
  margin:24px 0 26px;
}
.logic-thumbs img{
  width:64px; height:64px;
  object-fit:cover;
  border-radius:50%;
  border:1px solid var(--ring);
  padding:2px;
  background:#fff;
}
.logic-card h3{
  font-family:var(--serif);
  font-weight:400;
  font-size:24px;
  letter-spacing:.04em;
  color:var(--brand-deep);
  margin-bottom:16px;
}
.logic-card > p{
  font-size:14.5px;
  line-height:2;
  color:var(--ink-2);
}
.logic-tags{
  display:flex; flex-wrap:wrap; gap:8px;
  margin-top:24px !important;
  padding-top:22px;
  border-top:1px solid var(--line-soft);
}
.logic-tags span{
  font-size:11.5px;
  letter-spacing:.04em;
  color:var(--muted);
  padding:3px 10px;
  background:var(--pink-50);
  border:1px solid rgba(186,1,102,.1);
}

/* ==========================================================================
   品质溯源
   ========================================================================== */
.quality{
  background:
    linear-gradient(180deg, #FFFCFD 0%, var(--pink-50) 78%, #FFFCFD 100%);
}
.quality-grid{
  display:grid;
  grid-template-columns:.78fr 1.22fr;
  gap:64px;
  align-items:center;
}
.quality-photo{ margin:0; }
.quality-photo img{
  width:100%; height:auto;
  box-shadow:0 44px 76px -46px rgba(102,0,47,.55);
}
.quality-photo figcaption{
  margin-top:16px;
  font-size:11px;
  letter-spacing:.18em;
  color:var(--muted);
}
.quality-lead{
  font-family:var(--serif);
  font-size:clamp(17px,1.55vw,20px);
  line-height:2;
  letter-spacing:.03em;
  color:var(--brand-deep);
}
.quality-facts{
  display:grid;
  grid-template-columns:1fr 1fr;
  margin-top:36px;
  border-top:1px solid var(--line-soft);
}
.quality-facts > div{
  padding:22px 0 20px;
  border-bottom:1px solid var(--line-soft);
}
.quality-facts > div:nth-child(odd){ padding-right:28px; }
.quality-facts > div:nth-child(even){
  padding-left:28px;
  border-left:1px solid var(--line-soft);
}
.quality-facts dt{
  font-family:var(--serif);
  font-size:clamp(24px,2.5vw,31px);
  line-height:1.15;
  letter-spacing:.01em;
  color:var(--brand);
}
.quality-facts dt small{
  font-size:14px;
  letter-spacing:.02em;
  margin-left:3px;
}
.quality-facts dd{
  margin-top:7px;
  font-size:12.5px;
  letter-spacing:.08em;
  color:var(--muted);
}
.quality-note{
  margin-top:26px;
  font-size:11.5px;
  line-height:2;
  color:var(--muted);
}

.cert-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:26px;
  margin-top:64px;
}
.cert{
  position:relative;
  background:#fff;
  border:1px solid rgba(186,1,102,.1);
  padding:16px 16px 22px;
  transition:transform .5s var(--ease), box-shadow .5s var(--ease);
}
.cert:hover{
  transform:translateY(-4px);
  box-shadow:0 30px 50px -34px rgba(102,0,47,.4);
}
.cert figure{
  margin:0 0 16px;
  aspect-ratio:4/3;
  overflow:hidden;
  background:var(--pink-50);
}
.cert figure img{
  width:100%; height:100%;
  object-fit:cover;
  object-position:center top;
}
.cert-tag{
  display:inline-block;
  margin-bottom:9px;
  padding:2px 9px;
  font-size:10.5px;
  letter-spacing:.14em;
  color:var(--brand);
  border:1px solid rgba(186,1,102,.24);
  border-radius:999px;
}
.cert b{
  display:block;
  font-family:var(--serif);
  font-weight:400;
  font-size:15px;
  letter-spacing:.05em;
  color:var(--brand-deep);
  margin-bottom:6px;
}
.cert p{
  font-size:11.5px;
  line-height:1.95;
  letter-spacing:.02em;
  color:var(--muted);
}

/* ==========================================================================
   规格
   ========================================================================== */
.spec{ background:#fff; }
.spec-grid{
  display:grid;
  grid-template-columns:.86fr 1.14fr;
  gap:80px;
  align-items:center;
}
.spec-panel{
  position:relative;
  background:
    radial-gradient(80% 60% at 50% 8%, #FFFFFF 0%, rgba(255,255,255,0) 62%),
    linear-gradient(160deg, var(--pink-100) 0%, #FCEFF5 64%, #FDF7FA 100%);
  padding:56px 30px 40px;
  display:grid; place-items:center;
  box-shadow:0 40px 80px -50px rgba(102,0,47,.45);
}
.spec-panel img{
  width:auto; height:420px;
  filter:drop-shadow(0 20px 26px rgba(102,0,47,.2));
}
.spec-cap{
  margin-top:20px;
  text-align:center;
  font-size:11.5px;
  letter-spacing:.2em;
  color:var(--muted);
}

.spec-list{
  margin-top:38px;
  border-top:1px solid var(--line-soft);
}
.spec-list > div{
  display:flex; gap:24px;
  padding:16px 0;
  border-bottom:1px solid var(--line-soft);
}
.spec-list dt{
  flex:0 0 88px;
  font-size:13px;
  letter-spacing:.14em;
  color:var(--muted);
}
.spec-list dd{
  font-size:14.5px;
  line-height:1.9;
  color:var(--ink-2);
}

.steps{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:16px 26px;
  margin-top:36px;
}
.steps li{
  display:flex; align-items:flex-start; gap:12px;
  font-size:14px;
  line-height:1.8;
  color:var(--ink-2);
}
.steps li span{
  flex:none;
  font-family:var(--serif);
  font-size:12px;
  color:var(--brand);
  padding-top:2px;
  letter-spacing:.06em;
}

.spec-warn{
  margin-top:34px;
  padding:20px 24px;
  background:var(--pink-50);
  border-left:3px solid var(--brand);
  font-size:12.5px;
  line-height:1.95;
  color:var(--muted);
}
.spec-warn b{ color:var(--brand-deep); letter-spacing:.14em; margin-right:6px; }

/* ==========================================================================
   品牌
   ========================================================================== */
.brand{
  background:
    radial-gradient(70% 60% at 50% 0%, #FFFFFF 0%, rgba(255,255,255,0) 60%),
    var(--pink-50);
  border-top:1px solid var(--line-soft);
  text-align:center;
}
.brand-inner{ max-width:900px; }
.brand-logo{
  width:min(300px,62vw);
  margin:0 auto 44px;
}
.brand-quote{
  font-family:var(--serif);
  font-size:clamp(20px,2.4vw,30px);
  line-height:1.9;
  letter-spacing:.05em;
  color:var(--brand-deep);
}
.brand-visual{
  margin:56px auto 0;
  max-width:940px;
}
.brand-visual img{
  width:100%; height:auto;
  box-shadow:0 46px 80px -48px rgba(102,0,47,.45);
}
.brand-visual figcaption{
  margin-top:16px;
  font-size:11px;
  letter-spacing:.22em;
  color:var(--muted);
}
.brand-words{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:44px;
  margin-top:72px;
  text-align:left;
}
.brand-words b{
  display:block;
  font-family:var(--serif);
  font-weight:400;
  font-size:17px;
  letter-spacing:.06em;
  color:var(--brand);
  padding-bottom:14px;
  border-bottom:1px solid rgba(186,1,102,.2);
  margin-bottom:14px;
}
.brand-words p{
  font-size:13.5px;
  line-height:1.95;
  color:var(--muted);
}

/* ==========================================================================
   FAQ
   ========================================================================== */
.faq{ background:#fff; }
.faq-wrap{ max-width:860px; }
.faq-list{ border-top:1px solid var(--line-soft); }
.faq-item{
  border-bottom:1px solid var(--line-soft);
  padding:6px 0;
}
.faq-item summary{
  position:relative;
  padding:24px 46px 24px 0;
  font-size:16px;
  letter-spacing:.02em;
  color:var(--ink);
  cursor:pointer;
  list-style:none;
  transition:color .3s;
}
.faq-item summary::-webkit-details-marker{ display:none; }
.faq-item summary::after{
  content:"";
  position:absolute; right:6px; top:50%;
  width:12px; height:12px;
  margin-top:-7px;
  border-right:1px solid var(--brand);
  border-bottom:1px solid var(--brand);
  transform:rotate(45deg);
  transition:transform .4s var(--ease);
}
.faq-item[open] summary{ color:var(--brand); }
.faq-item[open] summary::after{ transform:rotate(-135deg); margin-top:-2px; }
.faq-a{
  padding:0 46px 26px 0;
  font-size:14.5px;
  line-height:2;
  color:var(--muted);
}
.faq-a b{ color:var(--brand-deep); font-weight:600; }

/* ==========================================================================
   CTA
   ========================================================================== */
.cta-band{
  background:
    radial-gradient(90% 100% at 84% 0%, #D4006F 0%, rgba(212,0,111,0) 62%),
    linear-gradient(150deg, #B30166 0%, #8A0049 100%);
  color:#fff;
  padding:96px 0;
}
.cta-inner{
  display:grid;
  grid-template-columns:1fr auto;
  gap:60px;
  align-items:center;
}
.cta-band h2{ color:#fff; }
.cta-sub{
  max-width:30ch;
  margin-top:22px;
  font-size:13.5px;
  line-height:2;
  color:rgba(255,255,255,.72);
}
.cta-actions{
  display:flex;
  flex-direction:column;
  align-items:flex-end;
  gap:10px;
}
.qr-card{
  background:#fff;
  padding:14px 14px 12px;
  text-align:center;
  box-shadow:0 34px 60px -30px rgba(60,0,26,.55);
}
.qr-card img{
  width:150px; height:150px;
  margin:0 auto;
}
.qr-card p{
  margin-top:10px;
  font-size:11px;
  letter-spacing:.16em;
  color:var(--brand-deep);
  white-space:nowrap;
}
.cta-note{
  max-width:196px;
  margin-top:2px;
  font-size:11.5px;
  letter-spacing:.05em;
  color:rgba(255,255,255,.56);
  text-align:center;
  line-height:1.9;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.footer{
  background:var(--brand-dark);
  color:rgba(255,255,255,.7);
  padding:64px 0 52px;
  font-size:12.5px;
}
.footer-inner{
  display:grid;
  grid-template-columns:1.2fr .8fr 1.4fr;
  gap:44px;
  align-items:start;
}
.footer-brand img{ width:150px; margin-bottom:18px; opacity:.92; }
.footer-brand p{ letter-spacing:.08em; color:rgba(255,255,255,.5); }

.footer-links{ display:flex; flex-direction:column; gap:12px; }
.footer-links a{ color:rgba(255,255,255,.72); transition:color .3s; }
.footer-links a:hover{ color:#fff; }

.footer-meta p{ line-height:2; color:rgba(255,255,255,.46); }
.footer-meta p:first-child{ margin-bottom:10px; }
.footer-meta .icp{
  color:rgba(255,255,255,.66);
  border-bottom:1px solid rgba(255,255,255,.22);
  padding-bottom:1px;
  transition:color .3s, border-color .3s;
}
.footer-meta .icp:hover{ color:#fff; border-color:rgba(255,255,255,.6); }

/* ==========================================================================
   REVEAL
   ========================================================================== */
.js .reveal{
  opacity:0;
  transform:translateY(24px);
  transition:opacity .9s var(--ease), transform .9s var(--ease);
}
.js .reveal.in{ opacity:1; transform:none; }

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

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width:1080px){
  .wrap{ padding:0 34px; }
  .nav-links{ gap:22px; }
  .ing{ flex:0 0 calc((100% - 80px) / 4); }
  .spec-grid{ gap:48px; }
  .spec-panel img{ height:360px; }
  .quality-grid{ gap:44px; }
  .cert-grid{ gap:18px; }
}

@media (max-width:900px){
  .section{ padding:88px 0; }
  .hero{ padding:126px 0 104px; }
  .hero-grid{
    grid-template-columns:1fr;
    gap:64px;
    text-align:center;
  }
  .hero-facts{ justify-content:center; }
  .hero-facts li{ flex:1 1 30%; min-width:0; }
  .hero-cta{ justify-content:center; }
  .nav-links{ display:none; }
  .strip-grid{ grid-template-columns:1fr 1fr; }
  .strip-item:nth-child(2){ border-right:0; }
  .strip-item:nth-child(1),.strip-item:nth-child(2){ border-bottom:1px solid var(--line-soft); }
  .logic-grid{ grid-template-columns:1fr; }
  .quality-grid{ grid-template-columns:1fr; gap:40px; }
  .quality-photo{ max-width:460px; }
  .cert-grid{ grid-template-columns:1fr; gap:20px; margin-top:48px; }
  .cert{
    display:grid;
    grid-template-columns:150px minmax(0,1fr);
    column-gap:20px;
    align-items:start;
  }
  .cert figure{ grid-column:1; grid-row:1 / span 3; margin:0; aspect-ratio:1/1; }
  .cert .cert-tag,
  .cert b,
  .cert p{ grid-column:2; }
  .cert .cert-tag{ justify-self:start; }
  .cert b{ margin-top:2px; }
  .spec-grid{ grid-template-columns:1fr; gap:44px; }
  .spec-visual{ order:2; }
  .brand-words{ grid-template-columns:1fr; gap:32px; }
  .cta-inner{ grid-template-columns:1fr; gap:36px; }
  .cta-actions{ align-items:flex-start; }
  .cta-note{ text-align:left; }
  .cta-sub{ max-width:none; }
  .footer-inner{ grid-template-columns:1fr; gap:32px; }
  .ing{ flex:0 0 calc((100% - 40px) / 3); }
}

@media (max-width:640px){
  body{ font-size:15px; }
  .wrap{ padding:0 22px; }
  .nav{ height:64px; }
  .brand-link img{ width:146px; }
  .nav.is-solid .brand-link img{ width:132px; }
  .nav-cta{ height:34px; padding:0 16px; font-size:11.5px; letter-spacing:.1em; }

  .hero{ padding:108px 0 92px; }
  .hero h1{ font-size:clamp(30px,8.4vw,40px); }
  .hero-facts b{ font-size:24px; }
  .hero-facts span{ font-size:11px; }
  .hero-facts li{ padding-right:12px; }
  .btn{ height:48px; padding:0 26px; font-size:13px; }
  .hero-visual{ --disc:min(80vw,318px); }
  .disc-ring{
    width:calc(var(--disc) + 32px);
    height:calc(var(--disc) + 32px);
    margin:calc((var(--disc) + 32px) / -2) 0 0 calc((var(--disc) + 32px) / -2);
  }

  .strip{ margin-top:-40px; }
  .strip-item{ padding:24px 20px 22px; }
  .strip-item b{ font-size:26px; }
  .strip-item span{ font-size:11.5px; }

  .section{ padding:72px 0; }
  .sec-head{ margin-bottom:48px; }
  h2{ font-size:26px; }
  .sec-lead{ font-size:14px; }

  .ing-grid{ gap:34px 18px; }
  .ing{ flex:0 0 calc((100% - 18px) / 2); }
  .ing-name{ font-size:12.5px; min-height:3.2em; }
  .ing-foot{ margin-top:40px; font-size:11px; }

  .logic-card{ padding:34px 24px 30px; }
  .logic-thumbs img{ width:48px; height:48px; }

  .spec-panel{ padding:34px 18px 26px; }
  .spec-panel img{ height:300px; }
  .spec-list dt{ flex:0 0 74px; font-size:12px; }
  .spec-list dd{ font-size:13.5px; }
  .steps{ grid-template-columns:1fr; gap:12px; }

  .quality-facts > div:nth-child(odd){ padding-right:18px; }
  .quality-facts > div:nth-child(even){ padding-left:18px; }
  .quality-facts dt{ font-size:23px; }
  .cert{ grid-template-columns:112px minmax(0,1fr); column-gap:14px; padding:12px; }
  .cert b{ font-size:14px; }
  .cert p{ font-size:11px; }

  .brand-logo{ width:min(230px,64vw); }
  .brand-quote{ font-size:17px; line-height:2; }
  .brand-visual{ margin-top:40px; }
  .brand-visual figcaption{ font-size:10px; }

  .faq-item summary{ font-size:15px; padding:20px 40px 20px 0; }
  .faq-a{ padding-right:10px; font-size:13.5px; }

  .cta-band{ padding:72px 0; }
  .qr-card img{ width:132px; height:132px; }
  .footer{ padding:52px 0 44px; }
}