/* ============================================================
   得胜28 · 共享站点样式 /assets/site.css
   基调：晨雾白铺底，山水青绿定结构，得胜红只亮一处
   ============================================================ */

:root{
  --mist:#F7FAF9;
  --mist-2:#E4EDEA;
  --jade:#1F7A6A;
  --ink-jade:#0E3B34;
  --red:#D93A2B;
  --red-deep:#BF3122;
  --coral:#F7D6D0;
  --gold:#D9A441;
  --haze:#CFE0DC;
  --gray-green:#6E857E;
  --ink:#101D1A;
  --wrap:1240px;
  --radius-lg:32px;
  --radius-md:24px;
  --radius-sm:16px;
  --shadow-soft:0 20px 44px -30px rgba(14,59,52,.5);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
}

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

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

body{
  margin:0;
  background:var(--mist);
  color:var(--ink);
  font-family:var(--font);
  font-size:17px;
  font-weight:400;
  line-height:1.8;
  letter-spacing:.005em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

h1,h2,h3,h4,h5{
  margin:0;
  font-weight:800;
  line-height:1.24;
  letter-spacing:-.02em;
  color:var(--ink-jade);
}
p{ margin:0; }
ul,ol{ margin:0; }
img{ max-width:100%; display:block; }
button{ font:inherit; color:inherit; }
a{ color:var(--jade); }

::selection{ background:var(--coral); color:var(--ink-jade); }

:focus-visible{
  outline:2px solid var(--red);
  outline-offset:3px;
  border-radius:6px;
}

/* ---------- 布局容器 ---------- */
.wrap{
  width:100%;
  max-width:var(--wrap);
  margin-inline:auto;
  padding-inline:clamp(18px,4vw,40px);
}

/* ---------- 跳转链接 ---------- */
.skip-link{
  position:fixed;
  top:8px;
  left:8px;
  z-index:200;
  padding:10px 18px;
  border-radius:999px;
  background:var(--red);
  color:#fff;
  font-size:14px;
  font-weight:700;
  text-decoration:none;
  transform:translateY(-160%);
  transition:transform .25s var(--ease);
}
.skip-link:focus{
  transform:translateY(0);
}

/* ---------- 顶部引导带 ---------- */
.route-band{
  background:linear-gradient(96deg,var(--mist-2),var(--mist) 58%);
  border-bottom:1px solid rgba(31,122,106,.12);
  font-size:13px;
  color:var(--gray-green);
}
.route-band__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  min-height:40px;
  padding-block:7px;
}
.route-band__path{
  display:flex;
  align-items:center;
  gap:8px;
  min-width:0;
}
.route-band__label{
  color:var(--gray-green);
  letter-spacing:.06em;
}
.route-band__link{
  padding:3px 12px;
  border-radius:999px;
  background:rgba(31,122,106,.1);
  color:var(--jade);
  font-weight:700;
  text-decoration:none;
  transition:background .25s var(--ease),color .25s var(--ease);
}
.route-band__link:hover{
  background:rgba(31,122,106,.2);
  color:var(--ink-jade);
}
.route-band__note{
  color:var(--gray-green);
  white-space:nowrap;
}

/* ---------- 页头 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(247,250,249,.88);
  backdrop-filter:blur(14px) saturate(1.15);
  -webkit-backdrop-filter:blur(14px) saturate(1.15);
  border-bottom:1px solid rgba(14,59,52,.08);
  transition:background .3s var(--ease),box-shadow .3s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(247,250,249,.96);
  box-shadow:0 16px 34px -28px rgba(14,59,52,.75);
}
.site-header__inner{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  min-height:82px;
  transition:min-height .3s var(--ease);
}
.site-header.is-scrolled .site-header__inner{
  min-height:64px;
}

/* 品牌 */
.brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  flex:0 0 auto;
  text-decoration:none;
  color:var(--ink-jade);
}
.brand__mark{
  display:grid;
  place-items:center;
  width:46px;
  height:46px;
  border-radius:16px;
  background:var(--ink-jade);
  color:var(--mist);
  font-size:16px;
  font-weight:900;
  letter-spacing:-.04em;
  box-shadow:inset 0 0 0 1px rgba(207,224,220,.28);
  transition:background .3s var(--ease),transform .3s var(--ease);
}
.brand:hover .brand__mark{
  background:var(--jade);
  transform:translateY(-2px);
}
.brand__text{
  display:flex;
  flex-direction:column;
  line-height:1.16;
}
.brand__name{
  font-size:19px;
  font-weight:800;
  letter-spacing:-.01em;
}
.brand__line{
  font-size:12px;
  color:var(--gray-green);
  font-weight:500;
}

/* 导航按钮 */
.nav-toggle{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:10px 16px;
  border-radius:999px;
  border:1px solid rgba(14,59,52,.1);
  background:rgba(228,237,234,.9);
  color:var(--ink-jade);
  font-size:14px;
  font-weight:700;
  cursor:pointer;
  transition:background .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease);
}
.nav-toggle__bars,
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  display:block;
  width:18px;
  height:2px;
  border-radius:2px;
  background:var(--ink-jade);
  transition:transform .3s var(--ease),background .3s var(--ease);
}
.nav-toggle__bars{
  position:relative;
}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";
  position:absolute;
  left:0;
}
.nav-toggle__bars::before{ top:-6px; }
.nav-toggle__bars::after{ top:6px; }
.nav-toggle[aria-expanded="true"]{
  background:var(--red);
  border-color:var(--red);
  color:#fff;
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars,
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before,
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after{
  background:#fff;
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before{ transform:translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after{ transform:translateY(-6px) rotate(-45deg); }

/* 导航本体：默认隐藏，<=1020px 由 [data-open] 展开 */
.site-nav{
  display:none;
}
.site-nav[data-open]{
  display:flex;
  flex-direction:column;
  align-items:stretch;
  gap:14px;
  position:absolute;
  left:12px;
  right:12px;
  top:calc(100% + 12px);
  padding:18px;
  border-radius:var(--radius-md);
  background:var(--mist);
  border:1px solid rgba(31,122,106,.16);
  box-shadow:0 34px 64px -34px rgba(14,59,52,.7);
  animation:nav-in .28s var(--ease) both;
}
@keyframes nav-in{
  from{ opacity:0; transform:translateY(-10px); }
  to{ opacity:1; transform:none; }
}
.site-nav__list{
  list-style:none;
  display:flex;
  flex-direction:column;
  gap:2px;
  margin:0;
  padding:0;
}
.nav-pill{
  display:block;
  padding:13px 16px;
  border-radius:var(--radius-sm);
  font-size:15px;
  font-weight:600;
  color:var(--ink-jade);
  text-decoration:none;
  transition:background .25s var(--ease),color .25s var(--ease),transform .25s var(--ease);
}
.nav-pill:hover{
  background:rgba(31,122,106,.09);
  color:var(--jade);
}
.nav-pill[aria-current="page"]{
  background:var(--coral);
  color:var(--red);
}
.nav-cta{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 22px;
  border-radius:999px;
  background:var(--red);
  color:#fff;
  font-size:15px;
  font-weight:700;
  text-decoration:none;
  box-shadow:0 18px 30px -22px rgba(217,58,43,.95);
  transition:background .25s var(--ease),transform .25s var(--ease);
}
.nav-cta:hover{
  background:var(--red-deep);
  transform:translateY(-2px);
}

@media (min-width:1021px){
  .nav-toggle{ display:none; }
  .site-nav,
  .site-nav[data-open]{
    display:flex;
    flex-direction:row;
    align-items:center;
    gap:16px;
    position:static;
    padding:0;
    border:0;
    border-radius:0;
    background:transparent;
    box-shadow:none;
    animation:none;
  }
  .site-nav__list{
    flex-direction:row;
    align-items:center;
    gap:4px;
    padding:5px;
    border-radius:999px;
    background:rgba(228,237,234,.75);
  }
  .nav-pill{
    padding:9px 16px;
    border-radius:999px;
    font-size:14.5px;
    white-space:nowrap;
  }
  .nav-pill:hover{
    background:#fff;
    transform:translateY(-1px);
  }
}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(72px,9vw,140px);
  background:var(--ink-jade);
  color:rgba(247,250,249,.82);
  overflow:hidden;
}
.site-footer::before{
  content:"";
  position:absolute;
  inset:0 0 auto 0;
  height:180px;
  background:
    radial-gradient(120% 100% at 8% 0%,rgba(31,122,106,.6),transparent 62%),
    radial-gradient(90% 90% at 92% 0%,rgba(217,58,43,.22),transparent 60%);
  pointer-events:none;
}
.site-footer::after{
  content:"";
  position:absolute;
  left:-6%;
  right:-6%;
  top:-1px;
  height:70px;
  border-radius:0 0 50% 50% / 0 0 100% 100%;
  background:rgba(247,250,249,.05);
  pointer-events:none;
}
.site-footer__inner{
  position:relative;
  display:grid;
  grid-template-columns:minmax(220px,1.05fr) minmax(0,1.6fr) minmax(220px,1fr);
  gap:clamp(28px,4.5vw,64px);
  padding-block:clamp(52px,6vw,84px);
}
.footer-brand__name{
  font-size:25px;
  font-weight:900;
  color:var(--mist);
  letter-spacing:-.01em;
}
.footer-brand__line{
  margin-top:4px;
  font-size:13.5px;
  font-weight:600;
  color:var(--haze);
  letter-spacing:.04em;
}
.footer-brand__desc{
  margin-top:16px;
  max-width:34ch;
  font-size:14px;
  line-height:1.8;
  color:rgba(247,250,249,.62);
}
.footer-cta{
  display:inline-flex;
  margin-top:20px;
  padding:12px 22px;
  border-radius:999px;
  background:var(--red);
  color:#fff;
  font-size:14px;
  font-weight:700;
  text-decoration:none;
  box-shadow:0 18px 30px -24px rgba(217,58,43,.9);
  transition:background .25s var(--ease),transform .25s var(--ease);
}
.footer-cta:hover{
  background:#fff;
  color:var(--red);
  transform:translateY(-2px);
}
.footer-nav{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.footer-col__title{
  margin-bottom:14px;
  font-size:12.5px;
  font-weight:700;
  letter-spacing:.16em;
  color:var(--gold);
}
.footer-col__list{
  list-style:none;
  display:grid;
  gap:9px;
  padding:0;
}
.footer-link{
  display:inline-block;
  border-radius:8px;
  color:rgba(247,250,249,.78);
  font-size:14.5px;
  text-decoration:none;
  transition:color .25s var(--ease),transform .25s var(--ease);
}
.footer-link:hover{
  color:#fff;
  transform:translateX(3px);
  text-decoration:underline;
  text-decoration-color:var(--red);
  text-underline-offset:5px;
}
.footer-contact{
  display:grid;
  gap:14px;
  align-content:start;
}
.footer-contact__block{
  display:grid;
  gap:8px;
  justify-items:start;
}
.footer-contact__item{
  display:grid;
  gap:2px;
}
.footer-contact__label{
  font-size:12px;
  font-weight:600;
  letter-spacing:.1em;
  color:var(--haze);
}
.footer-contact__value{
  font-size:14.5px;
  font-weight:600;
  color:var(--mist);
  word-break:break-all;
}
.copy-btn{
  padding:7px 14px;
  border-radius:999px;
  border:1px solid rgba(207,224,220,.32);
  background:rgba(207,224,220,.12);
  color:var(--mist);
  font-size:12.5px;
  font-weight:600;
  cursor:pointer;
  transition:background .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease);
}
.copy-btn:hover{
  background:var(--coral);
  border-color:var(--coral);
  color:var(--red);
}
.copy-btn.is-done{
  background:var(--gold);
  border-color:var(--gold);
  color:var(--ink-jade);
}
.site-footer__base{
  position:relative;
  border-top:1px solid rgba(207,224,220,.16);
  padding-block:18px;
}
.site-footer__base .wrap{
  display:flex;
  flex-wrap:wrap;
  gap:8px 24px;
  justify-content:space-between;
}
.footer-legal{
  font-size:13px;
  color:rgba(247,250,249,.6);
}

/* ---------- 浮动工具 ---------- */
.scroll-progress{
  position:fixed;
  top:0;
  left:0;
  right:0;
  height:3px;
  z-index:90;
  background:rgba(31,122,106,.12);
  pointer-events:none;
}
.scroll-progress__bar{
  display:block;
  height:100%;
  width:100%;
  transform:scaleX(0);
  transform-origin:0 50%;
  background:linear-gradient(90deg,var(--jade),var(--red));
}
.to-top{
  position:fixed;
  right:clamp(16px,3vw,32px);
  bottom:clamp(16px,3vw,32px);
  z-index:80;
  padding:12px 20px;
  border:0;
  border-radius:999px;
  background:var(--ink-jade);
  color:var(--mist);
  font-size:13.5px;
  font-weight:700;
  cursor:pointer;
  visibility:hidden;
  opacity:0;
  transform:translateY(12px);
  box-shadow:0 20px 34px -24px rgba(14,59,52,.95);
  transition:opacity .3s var(--ease),transform .3s var(--ease),visibility .3s;
}
.to-top.is-shown{
  visibility:visible;
  opacity:1;
  transform:none;
}
.to-top:hover{
  background:var(--red);
}

/* ---------- 通用按钮 / 标签 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 24px;
  border:1px solid transparent;
  border-radius:999px;
  font-family:var(--font);
  font-size:15px;
  font-weight:700;
  line-height:1.1;
  text-decoration:none;
  cursor:pointer;
  transition:background .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease),transform .25s var(--ease);
}
.btn--primary{
  background:var(--red);
  color:#fff;
  box-shadow:0 18px 30px -24px rgba(217,58,43,.95);
}
.btn--primary:hover{
  background:var(--red-deep);
  transform:translateY(-2px);
}
.btn--ghost{
  background:transparent;
  border-color:rgba(31,122,106,.38);
  color:var(--jade);
}
.btn--ghost:hover{
  background:rgba(31,122,106,.1);
  transform:translateY(-2px);
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 13px;
  border-radius:999px;
  background:var(--mist-2);
  color:var(--jade);
  font-size:12.5px;
  font-weight:600;
  letter-spacing:.02em;
}
.tag--red{
  background:var(--coral);
  color:var(--red);
}
.tag--gold{
  background:rgba(217,164,65,.2);
  color:#8a6417;
}

/* ---------- 面包屑 ---------- */
.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13.5px;
  color:var(--gray-green);
}
.crumbs__link{
  padding:2px 10px;
  border-radius:999px;
  background:rgba(31,122,106,.08);
  color:var(--jade);
  font-weight:600;
  text-decoration:none;
  transition:background .25s var(--ease);
}
.crumbs__link:hover{
  background:rgba(31,122,106,.18);
}

/* ---------- 正文容器 ---------- */
.prose{
  max-width:72ch;
  font-size:17px;
  line-height:1.85;
  color:var(--ink);
}
.prose > * + *{ margin-top:1em; }
.prose h2{
  margin-top:1.7em;
  font-size:clamp(24px,3vw,30px);
}
.prose h3{
  margin-top:1.5em;
  font-size:20px;
}
.prose ul,
.prose ol{
  padding-left:1.2em;
}
.prose li + li{ margin-top:.4em; }
.prose strong{ color:var(--ink-jade); }
.prose a{
  color:var(--jade);
  text-underline-offset:4px;
}
.prose a:hover{ color:var(--red); }

/* ---------- 章节头 ---------- */
.section-head{
  display:grid;
  gap:10px;
  max-width:62ch;
}
.section-head__num{
  font-size:clamp(42px,6vw,64px);
  font-weight:900;
  line-height:1;
  letter-spacing:-.05em;
  color:rgba(31,122,106,.22);
}
.section-head__title{
  font-size:clamp(28px,3.6vw,36px);
}
.section-head__lead{
  font-size:17px;
  line-height:1.8;
  color:var(--gray-green);
}

/* ---------- 网格 ---------- */
.grid-12{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:clamp(20px,3vw,36px);
}
.col-4{ grid-column:span 4; }
.col-5{ grid-column:span 5; }
.col-7{ grid-column:span 7; }
.col-8{ grid-column:span 8; }

/* ---------- 卡片 ---------- */
.card{
  padding:clamp(20px,2.6vw,32px);
  border:1px solid rgba(14,59,52,.08);
  border-radius:var(--radius-md);
  background:#fff;
  box-shadow:var(--shadow-soft);
}
.card--soft{
  background:var(--mist-2);
  border-color:transparent;
  box-shadow:none;
}
.card__title{
  margin-bottom:8px;
  font-size:21px;
  font-weight:800;
}
.card__meta{
  margin-bottom:10px;
  font-size:13px;
  color:var(--gray-green);
}

/* ---------- 图片容器（响应式基础规则） ---------- */
.media-frame{
  position:relative;
  overflow:hidden;
  aspect-ratio:16 / 10;
  border-radius:var(--radius-lg);
  background:linear-gradient(140deg,var(--haze),var(--mist-2) 56%,var(--coral) 150%);
}
.media-frame--wide{ aspect-ratio:21 / 9; }
.media-frame--tall{ aspect-ratio:4 / 5; }
.media-frame--square{ aspect-ratio:1 / 1; }
.media-frame__img{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
}
.media-frame__caption{
  position:absolute;
  left:16px;
  right:16px;
  bottom:16px;
  padding:8px 15px;
  border-radius:999px;
  background:rgba(14,59,52,.72);
  color:var(--mist);
  font-size:12.5px;
  line-height:1.5;
  backdrop-filter:blur(6px);
  -webkit-backdrop-filter:blur(6px);
}

/* ---------- 显现 ---------- */
.reveal{
  opacity:0;
  transform:translateY(18px);
  transition:opacity .62s var(--ease),transform .62s var(--ease);
}
.reveal.is-visible{
  opacity:1;
  transform:none;
}

/* ---------- 锚点目录 ---------- */
.anchor-nav{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
}
.anchor-nav__link{
  padding:8px 15px;
  border-radius:999px;
  background:var(--mist-2);
  color:var(--ink-jade);
  font-size:13.5px;
  font-weight:600;
  text-decoration:none;
  transition:background .25s var(--ease),color .25s var(--ease);
}
.anchor-nav__link:hover{
  background:var(--coral);
  color:var(--red);
}

/* ---------- 编号步骤 ---------- */
.step-list{
  list-style:none;
  display:grid;
  gap:18px;
  padding:0;
}
.step-list__item{
  display:grid;
  grid-template-columns:auto 1fr;
  gap:16px;
  align-items:start;
}
.step-list__num{
  display:grid;
  place-items:center;
  width:42px;
  height:42px;
  border-radius:50%;
  background:var(--jade);
  color:#fff;
  font-size:15px;
  font-weight:800;
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .site-footer__inner{
    grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  }
  .footer-contact{
    grid-column:1 / -1;
    grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
  }
}

@media (max-width:900px){
  .grid-12{ grid-template-columns:repeat(6,minmax(0,1fr)); }
  .col-4,.col-5,.col-7,.col-8{ grid-column:span 6; }
  .route-band__note{ display:none; }
}

@media (max-width:640px){
  body{ font-size:16.5px; }
  .grid-12{ grid-template-columns:minmax(0,1fr); }
  .col-4,.col-5,.col-7,.col-8{ grid-column:1 / -1; }
  .site-header__inner{ min-height:72px; }
  .brand__line{ display:none; }
  .site-footer__inner{ grid-template-columns:minmax(0,1fr); }
  .footer-nav{ grid-template-columns:minmax(0,1fr) minmax(0,1fr); }
  .footer-contact{ grid-template-columns:minmax(0,1fr); }
  .site-footer__base .wrap{ flex-direction:column; }
  .to-top{ padding:10px 16px; }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .reveal{ opacity:1 !important; transform:none !important; }
  .site-nav[data-open]{ animation:none; }
}