/* ===== 1. 变量 ===== */
:root{
  --night:#0B1B2B;
  --night-deep:#071320;
  --night-soft:#12293D;
  --heart:#E2314A;
  --heart-soft:#F0435C;
  --stand:#FF7A2F;
  --grass:#1F8A57;
  --lime:#C6FF3D;
  --indigo:#3A2B6B;
  --wine:#7A1F35;
  --cream:#F5F1E8;
  --fog:#C9D2DA;
  --ink:#101317;

  --radius-lg:28px;
  --radius:20px;
  --radius-sm:14px;
  --pill:999px;

  --wrap:1180px;
  --gutter:clamp(18px,4vw,40px);
  --header-h:66px;

  --font-display:"Barlow Condensed","Oswald","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-body:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --font-num:"JetBrains Mono","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

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

/* ===== 2. Reset ===== */
*,*::before,*::after{box-sizing:border-box}
html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:calc(var(--header-h) + 20px);
}
body{
  margin:0;
  padding-top:var(--header-h);
  background:var(--night);
  color:var(--cream);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
body.has-hero{padding-top:0}
body.is-nav-open{overflow:hidden}
h1,h2,h3,h4,p,figure{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img,video,svg{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
:focus-visible{outline:3px solid var(--stand);outline-offset:3px;border-radius:6px}

/* ===== 3. 中文排版与标题 ===== */
h1,h2,h3{text-wrap:balance;font-weight:800}
p{text-wrap:pretty}
.t-display{
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(38px,7vw,84px);
  line-height:.95;
  letter-spacing:-.02em;
}
.t-section{
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(26px,4.2vw,46px);
  line-height:1.06;
  letter-spacing:-.015em;
}
.t-card{
  font-family:var(--font-body);
  font-weight:800;
  font-size:19px;
  line-height:1.35;
  letter-spacing:0;
}
.lead{
  font-size:clamp(17px,2vw,19px);
  line-height:1.8;
  color:var(--fog);
  max-width:64ch;
}
.muted{
  color:var(--fog);
  font-size:14.5px;
  line-height:1.75;
}

/* ===== 4. 布局容器与分区 ===== */
.wrap{
  width:100%;
  max-width:var(--wrap);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.section{
  position:relative;
  padding-block:clamp(52px,8vw,104px);
}
.section--cream{background:var(--cream);color:var(--ink)}
.section--indigo{background:var(--indigo);color:var(--cream)}
.section--wine{background:var(--wine);color:var(--cream)}
.section--grass{background:var(--grass);color:var(--cream)}
.section--cream .lead,
.section--cream .muted{color:#4E5C68}
.section--cream .eyebrow{color:var(--wine)}
.section--indigo .eyebrow,
.section--wine .eyebrow{color:var(--lime)}

/* ===== 5. 网格 ===== */
.grid{display:grid;gap:clamp(16px,2.4vw,28px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--auto{grid-template-columns:repeat(auto-fit,minmax(230px,1fr))}

/* ===== 6. 通用元素 ===== */
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:12px;
  font-weight:800;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--stand);
}
.eyebrow::before{
  content:"";
  width:26px;
  height:3px;
  border-radius:2px;
  background:currentColor;
  flex:0 0 auto;
}
.pill{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:30px;
  padding:0 14px;
  border-radius:var(--pill);
  background:rgba(11,27,43,.55);
  border:1px solid rgba(245,241,232,.24);
  color:var(--cream);
  font-size:12px;
  font-weight:700;
  letter-spacing:.06em;
  white-space:nowrap;
  transition:background-color .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
}
.pill--heart{background:var(--heart);border-color:transparent;color:var(--cream)}
.pill--lime{background:var(--lime);border-color:transparent;color:var(--night)}
.pill.is-active{
  background:var(--lime);
  border-color:transparent;
  color:var(--night);
  font-weight:800;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:42px;
  padding:0 20px;
  border:1px solid transparent;
  border-radius:var(--pill);
  font-family:var(--font-body);
  font-weight:700;
  font-size:14px;
  letter-spacing:.02em;
  white-space:nowrap;
  transition:transform .2s var(--ease),background-color .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.btn--heart{background:var(--heart);color:var(--cream);box-shadow:0 6px 18px rgba(226,49,74,.28)}
.btn--heart:hover{background:var(--heart-soft);transform:translateY(-1px)}
.btn--ghost{background:transparent;color:currentColor;border-color:currentColor;opacity:.92}
.btn--ghost:hover{opacity:1;background:rgba(245,241,232,.1)}
.btn--lime{background:var(--lime);color:var(--night)}
.btn--lime:hover{background:#D4FF62;transform:translateY(-1px)}
.btn--sm{height:34px;padding:0 14px;font-size:12.5px}
.card{
  position:relative;
  display:flex;
  flex-direction:column;
  gap:12px;
  padding:clamp(18px,2.6vw,28px);
  border:1px solid rgba(245,241,232,.12);
  border-radius:var(--radius);
  background:var(--night-soft);
  color:var(--cream);
  overflow:hidden;
}
.card--cream{
  background:var(--cream);
  color:var(--ink);
  border-color:rgba(16,19,23,.1);
}
.score{
  display:inline-flex;
  align-items:baseline;
  gap:.14em;
  padding:.16em .26em .2em;
  border:1px solid rgba(245,241,232,.3);
  border-radius:var(--radius);
  background:rgba(11,27,43,.55);
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-weight:700;
  font-size:clamp(44px,9vw,96px);
  line-height:.9;
  letter-spacing:-.03em;
  color:var(--cream);
}
.score__unit{
  font-family:var(--font-body);
  font-size:.2em;
  font-weight:800;
  letter-spacing:.16em;
  color:var(--lime);
}
.cut{
  position:relative;
  display:flex;
  align-items:center;
  gap:clamp(16px,3vw,40px);
  height:clamp(46px,6vw,64px);
  padding-inline:var(--gutter);
  background:var(--stand);
  color:var(--night);
  font-family:var(--font-num);
  font-size:12.5px;
  font-weight:700;
  letter-spacing:.16em;
  overflow:hidden;
  clip-path:polygon(0 22%,100% 0,100% 78%,0 100%);
}
.dot-grid{
  background-image:radial-gradient(rgba(245,241,232,.18) 1px,transparent 1px);
  background-size:14px 14px;
  background-position:center;
}

/* ===== 7. 图片容器基础规则 ===== */
.media{
  position:relative;
  overflow:hidden;
  isolation:isolate;
  border-radius:var(--radius);
  background:linear-gradient(150deg,var(--night-soft),var(--night-deep));
}
.media img,
.media video,
.media svg{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
}
.media--wide{aspect-ratio:16/9}
.media--tall{aspect-ratio:3/4}
.media--square{aspect-ratio:1/1}
.media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(7,19,32,0) 42%,rgba(7,19,32,.82) 100%);
  pointer-events:none;
}
.media__tag{
  position:absolute;
  left:14px;
  bottom:14px;
  z-index:2;
  display:inline-flex;
  align-items:center;
  height:28px;
  padding:0 12px;
  border-radius:var(--pill);
  background:var(--heart);
  color:var(--cream);
  font-size:11.5px;
  font-weight:800;
  letter-spacing:.08em;
}

/* ===== 8. 动效基础 ===== */
[data-reveal]{
  opacity:0;
  transform:translateY(24px);
  transition:opacity .32s var(--ease),transform .32s var(--ease);
}
[data-reveal].is-in{opacity:1;transform:none}
@keyframes brand-dash{to{stroke-dashoffset:-120}}
@keyframes footer-wave{to{stroke-dashoffset:-200}}

/* ===== 9. 头部 ===== */
.skip-link{
  position:fixed;
  left:16px;
  top:-80px;
  z-index:400;
  padding:12px 20px;
  border-radius:0 0 var(--radius-sm) var(--radius-sm);
  background:var(--lime);
  color:var(--night);
  font-weight:800;
  font-size:14px;
  transition:top .22s var(--ease);
}
.skip-link:focus{top:0}
.site-header{
  position:fixed;
  inset:0 0 auto 0;
  z-index:200;
  background:var(--night);
  border-bottom:1px solid rgba(245,241,232,.14);
  transition:background-color .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
}
body.has-hero .site-header:not(.is-scrolled){
  background:transparent;
  border-bottom-color:transparent;
  box-shadow:none;
}
.site-header.is-scrolled{
  background:var(--night);
  border-bottom-color:rgba(245,241,232,.14);
  box-shadow:0 12px 32px rgba(4,12,20,.45);
}
.scroll-progress{
  position:absolute;
  left:0;
  top:0;
  z-index:3;
  width:0;
  height:3px;
  border-radius:0 3px 3px 0;
  background:linear-gradient(90deg,var(--heart) 0%,var(--stand) 55%,var(--lime) 100%);
  transition:width .1s linear;
}
.site-header__inner{
  width:100%;
  max-width:var(--wrap);
  margin-inline:auto;
  padding-inline:var(--gutter);
  height:var(--header-h);
  display:flex;
  align-items:center;
  gap:clamp(10px,2vw,26px);
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
}
.brand__pulse{
  display:block;
  width:44px;
  height:24px;
  flex:0 0 auto;
  color:var(--heart);
}
.brand__pulse svg{width:100%;height:100%;overflow:visible}
.brand__line{
  stroke-dasharray:70 300;
  animation:brand-dash 4.5s linear infinite;
}
.brand__text{display:flex;flex-direction:column;justify-content:center}
.brand__name{
  font-family:var(--font-display);
  font-weight:800;
  font-size:20px;
  line-height:1;
  letter-spacing:.04em;
  color:var(--cream);
}
.brand__tag{
  display:block;
  margin-top:4px;
  font-size:9px;
  line-height:1;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--fog);
}
.nav{margin-left:auto;display:flex;align-items:center}
.nav__list{display:flex;align-items:center;gap:2px}
.nav__link{
  display:inline-flex;
  align-items:center;
  height:36px;
  padding:0 12px;
  border-radius:var(--pill);
  font-size:14.5px;
  font-weight:500;
  color:var(--fog);
  transition:color .24s var(--ease),background-color .24s var(--ease);
}
.nav__link:hover{color:var(--cream);background:rgba(245,241,232,.08)}
.nav__link[aria-current="page"]{
  background:var(--lime);
  color:var(--night);
  font-weight:800;
}
.header__cta{margin-left:clamp(8px,1.4vw,18px)}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  flex:0 0 auto;
  margin-left:auto;
  align-items:center;
  justify-content:center;
  border:1px solid rgba(245,241,232,.28);
  border-radius:14px;
  transition:border-color .24s var(--ease),background-color .24s var(--ease);
}
.nav-toggle:hover{border-color:var(--cream);background:rgba(245,241,232,.08)}
.nav-toggle__box{position:relative;display:block;width:20px;height:14px}
.nav-toggle__box span{
  position:absolute;
  left:0;
  width:100%;
  height:2px;
  border-radius:2px;
  background:var(--cream);
  transition:transform .26s var(--ease),opacity .2s var(--ease),top .26s var(--ease);
}
.nav-toggle__box span:nth-child(1){top:0}
.nav-toggle__box span:nth-child(2){top:6px}
.nav-toggle__box span:nth-child(3){top:12px}
.nav-toggle[aria-expanded="true"] .nav-toggle__box span:nth-child(1){top:6px;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__box span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle__box span:nth-child(3){top:6px;transform:rotate(-45deg)}

/* ===== 10. 页脚 ===== */
.site-footer{
  position:relative;
  overflow:hidden;
  background:var(--night-deep);
  color:var(--fog);
  border-top:1px solid rgba(245,241,232,.1);
}
.site-footer__wave{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:140px;
  color:var(--heart);
  opacity:.14;
  pointer-events:none;
}
.site-footer__wave svg{width:100%;height:100%}
.wave__line{stroke-dasharray:8 12;animation:footer-wave 9s linear infinite}
.site-footer__inner{
  position:relative;
  z-index:1;
  max-width:var(--wrap);
  margin-inline:auto;
  padding:clamp(36px,6vw,64px) var(--gutter) clamp(24px,4vw,36px);
  display:grid;
  gap:clamp(26px,4vw,48px);
  grid-template-columns:1.1fr 1.15fr 1fr;
}
.foot-col{min-width:0}
.foot-title{
  margin-bottom:14px;
  font-family:var(--font-body);
  font-size:12px;
  font-weight:800;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--lime);
}
.foot-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px 18px}
.foot-link{
  font-size:14.5px;
  color:var(--fog);
  transition:color .2s var(--ease);
}
.foot-link:hover{color:var(--cream)}
.foot-legal{
  display:flex;
  flex-wrap:wrap;
  gap:8px 18px;
  margin-top:22px;
  padding-top:16px;
  border-top:1px solid rgba(245,241,232,.12);
}
.foot-legal__link{
  font-size:12.5px;
  letter-spacing:.04em;
  color:var(--fog);
  transition:color .2s var(--ease);
}
.foot-legal__link:hover{color:var(--stand)}
.foot-brand{
  font-family:var(--font-display);
  font-weight:800;
  font-size:26px;
  line-height:1.1;
  letter-spacing:.02em;
  color:var(--cream);
  margin-bottom:8px;
}
.foot-line{
  font-size:15px;
  font-weight:700;
  line-height:1.6;
  color:var(--stand);
  margin-bottom:12px;
}
.foot-tip{
  font-size:14px;
  line-height:1.8;
  color:var(--fog);
  max-width:34em;
}
.foot-contact{display:grid;gap:12px}
.foot-contact__item{
  display:grid;
  gap:2px;
  font-size:14.5px;
  line-height:1.6;
  color:var(--cream);
  overflow-wrap:anywhere;
}
.foot-contact__label{
  font-size:11px;
  font-weight:800;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--fog);
}
.site-footer__base{
  position:relative;
  z-index:1;
  max-width:var(--wrap);
  margin-inline:auto;
  padding:16px var(--gutter) 26px;
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  justify-content:space-between;
  font-size:12.5px;
  color:var(--fog);
  border-top:1px solid rgba(245,241,232,.1);
}

/* ===== 11. 响应式 ===== */
@media (max-width:1000px){
  .nav__link{padding:0 9px;font-size:14px}
}
@media (max-width:900px){
  :root{--header-h:60px}
  .nav-toggle{display:inline-flex}
  .header__cta{height:36px;padding:0 14px;font-size:12.5px}
  .nav{
    position:fixed;
    left:0;
    right:0;
    top:var(--header-h);
    display:block;
    margin-left:0;
    max-height:calc(100dvh - var(--header-h));
    overflow-y:auto;
    padding:10px var(--gutter) 26px;
    background:var(--night);
    border-bottom:1px solid rgba(245,241,232,.14);
    box-shadow:0 24px 40px rgba(4,12,20,.5);
    opacity:0;
    visibility:hidden;
    pointer-events:none;
    transform:translateY(-12px);
    transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s var(--ease);
  }
  .nav[data-open]{
    opacity:1;
    visibility:visible;
    pointer-events:auto;
    transform:none;
  }
  .nav__list{display:block}
  .nav__link{
    display:flex;
    height:auto;
    min-height:52px;
    padding:0 16px;
    border-radius:var(--radius-sm);
    border-bottom:1px solid rgba(245,241,232,.08);
    font-size:17px;
  }
  .nav__link[aria-current="page"]{border-bottom-color:transparent}
  .site-footer__inner{grid-template-columns:1fr 1fr}
}
@media (max-width:640px){
  body{font-size:16px}
  .brand__tag{display:none}
  .brand__name{font-size:18px}
  .brand__pulse{width:38px}
  .grid--2,
  .grid--3{grid-template-columns:minmax(0,1fr)}
  .site-footer__inner{grid-template-columns:minmax(0,1fr)}
  .site-footer__base{flex-direction:column;gap:6px}
}
@media (max-width:420px){
  .header__cta{padding:0 11px;font-size:12px}
  .foot-list{grid-template-columns:minmax(0,1fr)}
}

/* ===== 12. 无障碍与动效偏好 ===== */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  [data-reveal]{opacity:1;transform:none}
}