/* =========================================================
   智慧党建学习系统 · 产品展示站
   视觉：头图红金 → 内容区深红 / 米白 / 暖金
   ========================================================= */

/* ---------- 1. 设计令牌 ---------- */
:root{
  --red-900:#540D0D;
  --red-800:#77131A;
  --red-700:#8E1A1C;
  --red-600:#A82422;
  --red-tint:#F6E7E2;

  --gold:#B08A46;
  --gold-ink:#7A5C22;
  --gold-lt:#D8BD8B;
  --gold-glow:rgba(216,189,139,.55);

  --cream:#F8F3E9;
  --cream-2:#F1E8D8;
  --paper:#FFFCF5;

  --ink:#1F1719;
  --ink-2:#463A3B;
  --muted:#7C6C67;
  --line:rgba(119,19,26,.13);
  --line-gold:rgba(176,138,70,.34);

  --display:"HansDisplay","Source Han Sans SC","Noto Sans SC","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  --sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;

  --pad:clamp(20px,5vw,72px);
  --maxw:1240px;
  --sec-y:clamp(64px,8.5vw,124px);
  --r:2px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- 2. 基础 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{
  margin:0;
  font-family:var(--sans);
  font-size:17px;
  line-height:1.75;
  color:var(--ink-2);
  background:var(--cream);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
/* 纸张颗粒 + 极淡红晕：避免纯色平铺 */
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)' opacity='.035'/%3E%3C/svg%3E");
  mix-blend-mode:multiply;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-family:var(--display);color:var(--ink);font-weight:700;line-height:1.22;margin:0;letter-spacing:.005em}
h1,h2{font-weight:900}
p,figure,figcaption,blockquote{margin:0}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
:focus-visible{outline:2px solid var(--red-700);outline-offset:3px;border-radius:1px}
.on-dark :focus-visible{outline-color:var(--gold-lt)}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

.wrap{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--pad);position:relative;z-index:1}

/* ---------- 3. 顶栏 ---------- */
.topbar{
  position:sticky;top:0;z-index:80;
  background:rgba(248,243,233,.92);
  backdrop-filter:saturate(1.4) blur(14px);
  -webkit-backdrop-filter:saturate(1.4) blur(14px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .35s var(--ease),background .35s var(--ease);
}
.topbar.is-stuck{box-shadow:0 1px 0 var(--line-gold),0 12px 30px -22px rgba(84,13,13,.5)}
.topbar__in{
  max-width:var(--maxw);margin-inline:auto;padding-inline:var(--pad);
  height:70px;display:flex;align-items:center;gap:clamp(12px,3vw,40px);
  transition:height .35s var(--ease);
}
.topbar.is-stuck .topbar__in{height:60px}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto;min-height:44px}
.brand__seal{
  width:30px;height:30px;flex:0 0 auto;border-radius:2px;
  background:linear-gradient(150deg,var(--red-600),var(--red-800));
  color:var(--gold-lt);font-family:var(--display);font-size:14px;font-weight:700;
  display:grid;place-items:center;letter-spacing:0;
  box-shadow:inset 0 0 0 1px rgba(216,189,139,.45);
}
.brand__txt{font-family:var(--display);font-size:17px;font-weight:900;color:var(--ink);letter-spacing:.03em;line-height:1.2}
.brand__txt small{display:block;font-family:var(--sans);font-size:10px;font-weight:400;letter-spacing:.22em;color:var(--muted);margin-top:2px}
.nav{display:flex;align-items:center;gap:clamp(4px,1.4vw,26px);margin-left:auto}
.nav a{
  position:relative;font-size:14.5px;color:var(--ink-2);padding:10px 4px;
  min-height:44px;display:inline-flex;align-items:center;letter-spacing:.02em;
  transition:color .2s var(--ease);
}
.nav a::after{
  content:"";position:absolute;left:4px;right:4px;bottom:12px;height:1px;
  background:var(--red-700);transform:scaleX(0);transform-origin:left;
  transition:transform .3s var(--ease);
}
.nav a:hover{color:var(--red-700)}
.nav a:hover::after,.nav a[aria-current="true"]::after{transform:scaleX(1)}
.nav a[aria-current="true"]{color:var(--red-700);font-weight:600}
.topbar__cta{
  flex:0 0 auto;margin-left:6px;
  display:inline-flex;align-items:center;gap:8px;
  min-height:40px;padding:0 18px;border-radius:2px;
  background:var(--red-800);color:#F7EEDD;
  font-size:14px;letter-spacing:.04em;
  box-shadow:inset 0 0 0 1px rgba(216,189,139,.35);
  transition:background .25s var(--ease),transform .25s var(--ease);
}
.topbar__cta:hover{background:var(--red-900);transform:translateY(-1px)}
.burger{
  display:none;width:44px;height:44px;margin-left:auto;
  align-items:center;justify-content:center;color:var(--ink);
}
.burger span{display:block;width:20px;height:1.5px;background:currentColor;position:relative;transition:.3s var(--ease)}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:20px;height:1.5px;background:currentColor;transition:.3s var(--ease)}
.burger span::before{top:-6px}.burger span::after{top:6px}
.burger[aria-expanded="true"] span{background:transparent}
.burger[aria-expanded="true"] span::before{top:0;transform:rotate(45deg)}
.burger[aria-expanded="true"] span::after{top:0;transform:rotate(-45deg)}

@media (max-width:940px){
  .nav{
    position:fixed;inset:70px 0 auto;flex-direction:column;align-items:stretch;gap:0;
    background:var(--paper);border-bottom:1px solid var(--line-gold);
    padding:8px var(--pad) 18px;margin:0;
    box-shadow:0 24px 40px -28px rgba(84,13,13,.6);
    transform:translateY(-8px);opacity:0;pointer-events:none;visibility:hidden;
    transition:.3s var(--ease);
  }
  .nav.is-open{transform:none;opacity:1;pointer-events:auto;visibility:visible}
  .nav a{padding:15px 2px;font-size:16px;border-bottom:1px solid var(--line)}
  .nav a::after{display:none}
  .topbar__cta{display:none}
  .burger{display:flex}
  .brand__txt small{display:none}
}

/* ---------- 4. 头图 ---------- */
.hero{position:relative;overflow:hidden;background:var(--red-800)}
.hero__frame{position:relative;aspect-ratio:2172/724;max-height:72vh;overflow:hidden}
.hero__img{
  width:100%;height:100%;object-fit:cover;object-position:center;
  animation:heroIn 1.4s var(--ease) both;
}
@keyframes heroIn{from{transform:scale(1.035);opacity:.55}to{transform:none;opacity:1}}
@media (prefers-reduced-motion:reduce){
  .hero__img{animation:none}
}
.hero__fade{
  position:absolute;left:0;right:0;bottom:0;height:34%;
  background:linear-gradient(to bottom,rgba(84,13,13,0),rgba(84,13,13,.55));
  pointer-events:none;
}
@media (max-width:760px){
  .hero__frame{aspect-ratio:auto;height:clamp(190px,52vw,300px);max-height:none}
  .hero__img{object-position:6% center;animation-duration:1s}
  .hero__fade{height:26%}
}

/* ---------- 5. 命题带（深红） ---------- */
.claim{
  position:relative;background:var(--red-800);color:#F3E6D4;
  padding-block:clamp(44px,6vw,76px) clamp(40px,5.5vw,64px);
  overflow:hidden;
}
.claim::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(120% 90% at 8% 0%,rgba(168,36,34,.85),transparent 62%),
    radial-gradient(90% 120% at 100% 100%,rgba(84,13,13,.9),transparent 60%);
}
.claim::after{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--gold-glow) 22%,var(--gold-glow) 78%,transparent);
}
.claim__grid{display:block}
.claim__kicker{
  font-size:11.5px;letter-spacing:.34em;color:var(--gold-lt);margin-bottom:16px;
}
.claim h1{
  font-size:clamp(26px,3.6vw,44px);color:#FFF8EB;line-height:1.36;letter-spacing:.01em;font-weight:900;
  text-wrap:balance;max-width:17em;
}
.claim h1 em{
  font-style:normal;color:var(--gold-lt);
  background-image:linear-gradient(180deg,rgba(216,189,139,.34),rgba(216,189,139,.34));
  background-repeat:no-repeat;
  background-size:100% .13em;
  background-position:0 88%;
}
.claim__lead{
  /* 中文按字数定宽：34em ≈ 每行 34 字，比 ch 单位更贴合汉字排版 */
  margin-top:18px;font-size:15.5px;line-height:1.85;color:rgba(246,232,213,.76);max-width:34em;
}

/* ---------- 6. 章节通用 ---------- */
.sec{position:relative;padding-block:var(--sec-y);scroll-margin-top:78px}
#top,.hero{scroll-margin-top:0}
.sec--dark{background:var(--red-900);color:rgba(246,232,213,.8)}
.sec--paper{background:var(--paper)}

.sec-head{position:relative;margin-bottom:clamp(32px,4.6vw,64px)}
.sec-head__rule{display:flex;align-items:center;gap:12px;margin-bottom:22px}
.sec-head__rule::before{content:"";width:7px;height:7px;background:var(--gold);transform:rotate(45deg);flex:0 0 auto}
.sec-head__rule span{font-size:11px;letter-spacing:.26em;color:var(--gold-ink);white-space:nowrap}
.sec-head__rule::after{content:"";height:1px;flex:1;background:linear-gradient(90deg,var(--line-gold),transparent)}
.sec-head h2{
  font-size:clamp(26px,4.1vw,44px);letter-spacing:.005em;max-width:20em;text-wrap:balance;font-weight:900;
}
.sec-head__lead{
  margin-top:16px;font-size:15.5px;line-height:1.85;color:var(--muted);max-width:46ch;
}
.sec-head__ghost{
  position:absolute;right:0;top:-.32em;z-index:0;
  font-family:var(--display);font-weight:900;
  font-size:clamp(88px,13.6vw,172px);line-height:1;
  color:transparent;
  -webkit-text-stroke:1px rgba(176,138,70,.3);
  pointer-events:none;user-select:none;letter-spacing:.02em;
}
@supports not (-webkit-text-stroke:1px #000){
  .sec-head__ghost{color:rgba(176,138,70,.08);-webkit-text-stroke:0}
}
.sec--dark .sec-head__ghost{-webkit-text-stroke-color:rgba(216,189,139,.32)}
.sec--dark .sec-head__rule span{color:var(--gold-lt)}
.sec--dark .sec-head h2{color:#FFF7EA}
.sec--dark .sec-head__lead{color:rgba(246,232,213,.66)}
.sec--dark .sec-head__rule::after{background:linear-gradient(90deg,rgba(216,189,139,.5),transparent)}
@media (max-width:700px){
  .sec-head__ghost{font-size:64px;top:-.62em;right:-.06em;opacity:.6}
  .sec-head__lead{max-width:none}
}

/* 揭示动画 */
.js .reveal{opacity:0;transform:translateY(18px)}
.js .reveal.in{opacity:1;transform:none;transition:opacity .85s var(--ease),transform .85s var(--ease)}
@media (prefers-reduced-motion:reduce){
  .js .reveal{opacity:1;transform:none}
}

/* ---------- 7. 产品构成 ---------- */
.compose{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(16px,2.4vw,32px)}
.part{
  position:relative;background:var(--paper);
  border:1px solid var(--line);border-radius:var(--r);
  padding:clamp(24px,2.8vw,38px) clamp(20px,2.4vw,32px) clamp(20px,2.2vw,28px);
  display:flex;flex-direction:column;
  transition:transform .4s var(--ease),box-shadow .4s var(--ease),border-color .4s var(--ease);
  overflow:hidden;
}
.part::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--red-700),var(--gold));
  transform:scaleX(0);transform-origin:left;transition:transform .5s var(--ease);
}
.part:hover{transform:translateY(-4px);box-shadow:0 22px 48px -34px rgba(84,13,13,.55);border-color:var(--line-gold)}
.part:hover::before{transform:scaleX(1)}
.part__idx{
  width:38px;height:38px;border-radius:50%;flex:0 0 auto;
  display:grid;place-items:center;
  font-family:var(--display);font-size:15px;font-weight:700;color:var(--red-800);
  border:1px solid var(--line-gold);background:var(--cream-2);
  position:relative;
}
.part__idx::after{content:"";position:absolute;inset:-5px;border-radius:50%;border:1px solid rgba(176,138,70,.18)}
.part h3{font-size:clamp(19px,2.1vw,23px);margin-top:20px;letter-spacing:.04em}
.part__en{font-size:10.5px;letter-spacing:.24em;color:var(--gold-ink);margin-top:7px;text-transform:uppercase}
.part ul{list-style:none;margin:20px 0 0;padding:0;display:grid;gap:11px}
.part li{position:relative;padding-left:16px;font-size:15px;line-height:1.65;color:var(--ink-2)}
.part li::before{
  content:"";position:absolute;left:0;top:.62em;width:5px;height:5px;
  border:1px solid var(--gold);transform:rotate(45deg);
}
.part__tag{
  padding-top:18px;margin:22px 0 0;margin-top:auto;
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--red-700);letter-spacing:.04em;
  border-top:1px dashed var(--line-gold);
}
.part__tag b{
  font-weight:400;font-size:10.5px;letter-spacing:.16em;color:#FFF6E6;
  background:var(--red-800);padding:3px 7px;border-radius:1px;
}
@media (max-width:900px){.compose{grid-template-columns:1fr}}

/* 实景配图 */
.room{margin-top:clamp(28px,4vw,56px)}
.room__fig{
  position:relative;overflow:hidden;border:1px solid var(--line);
  background:var(--cream-2);aspect-ratio:16/9;
}
.room__fig img{
  width:100%;height:100%;object-fit:cover;object-position:center 58%;
  transition:transform 1.2s var(--ease);
}
.room:hover .room__fig img{transform:scale(1.015)}
.room__cap{
  display:flex;gap:16px;align-items:baseline;flex-wrap:wrap;
  margin-top:14px;padding-top:14px;
  border-top:1px solid var(--line);font-size:12.5px;letter-spacing:.04em;
}
.room__cap b{font-family:var(--display);font-size:14.5px;letter-spacing:.05em;color:var(--ink)}
.room__cap span{color:var(--muted);font-size:12px;letter-spacing:.06em}
@media (max-width:700px){
  .room__fig{aspect-ratio:4/3}
  .room__cap{gap:6px}
  .room__cap b{font-size:13.5px}
  .room__cap span{font-size:11.5px}
}

/* ---------- 8. 视频卡（通用） ---------- */
.vcard,.lcard{margin:0;min-width:0}
.vcard__media{
  position:relative;aspect-ratio:3/2;overflow:hidden;
  background:#2A0A0A;border:1px solid rgba(216,189,139,.24);
  border-radius:var(--r);
  transition:border-color .4s var(--ease);
}
.lcard .vcard__media{aspect-ratio:1/1;border-color:var(--line)}
.vcard__btn{position:absolute;inset:0;display:block;width:100%;height:100%}
.vcard__btn img{
  width:100%;height:100%;object-fit:cover;object-position:center;
  transition:transform .9s var(--ease),opacity .4s var(--ease);
}
.vcard__media:hover img{transform:scale(1.025)}
.vcard__media:hover{border-color:var(--gold-lt)}
.lcard .vcard__media:hover{border-color:var(--gold)}
.vcard__btn:focus-visible{outline-offset:-2px}
.vcard__media.is-playing .vcard__play,
.vcard__media.is-playing .vcard__dur{display:none}
.vcard__media.is-playing img{opacity:0}
/* 卡片上方的类别标签（在图注里，不压录屏画面） */
.card-kicker{
  display:block;font-family:var(--sans);font-style:normal;
  font-size:10.5px;letter-spacing:.2em;line-height:1;
  color:var(--gold-ink);margin-bottom:8px;
}
.sec--dark .card-kicker{color:var(--gold-lt)}
.vcard__play{
  position:absolute;left:50%;top:50%;z-index:3;
  width:60px;height:60px;margin:-30px 0 0 -30px;border-radius:50%;
  background:rgba(248,243,233,.94);
  box-shadow:0 10px 30px -12px rgba(0,0,0,.7);
  transition:transform .35s var(--ease),background .3s var(--ease);
}
.vcard__play::after{
  content:"";position:absolute;left:50%;top:50%;
  margin:-8px 0 0 -5px;
  border-left:13px solid var(--red-800);
  border-top:8px solid transparent;
  border-bottom:8px solid transparent;
}
.vcard__btn:hover .vcard__play{transform:scale(1.08);background:#fff}
.vcard__dur{
  position:absolute;right:10px;bottom:10px;z-index:3;
  font-size:11px;letter-spacing:.06em;font-variant-numeric:tabular-nums;
  padding:3px 7px;border-radius:1px;
  background:rgba(20,8,8,.72);color:#F3E6D4;
}
.vcard figcaption,.lcard figcaption{margin-top:14px}
.vcard figcaption b,.lcard figcaption b{
  display:block;font-family:var(--display);font-size:15px;letter-spacing:.035em;line-height:1.5;
}
.vcard figcaption span,.lcard figcaption span{
  display:block;font-size:12.5px;line-height:1.7;color:var(--muted);margin-top:4px;letter-spacing:.01em;
}
.sec--dark .vcard figcaption b{color:#FFF6E6}
.sec--dark .vcard figcaption span{color:rgba(246,232,213,.55)}

/* 播放中的 video 元素 */
.video-el{
  position:absolute;inset:0;width:100%;height:100%;
  background:#000;object-fit:contain;z-index:4;
}
.lcard .video-el{object-fit:cover}

/* 01 系统演示：主推 + 两张竖排 */
.vfeat{
  display:grid;grid-template-columns:minmax(0,1.62fr) minmax(0,1fr);
  gap:clamp(18px,2.6vw,34px);align-items:start;
}
.vcard--hero .vcard__media{aspect-ratio:3/2}
.vcard--hero .vcard__play{width:74px;height:74px;margin:-37px 0 0 -37px}
.vcard--hero .vcard__play::after{
  margin:-10px 0 0 -6px;border-left-width:16px;border-top-width:10px;border-bottom-width:10px;
}
.vcard--hero figcaption{margin-top:18px;padding-top:16px;border-top:1px solid rgba(216,189,139,.24)}
.vcard--hero figcaption b{font-size:clamp(17px,1.9vw,20px)}
.vcard--hero figcaption span{max-width:52ch}
.vfeat__side{display:grid;gap:clamp(18px,2.6vw,30px)}
.vfeat__side .vcard__media{aspect-ratio:3/2}
.vnote{
  margin-top:clamp(24px,3vw,40px);font-size:12.5px;letter-spacing:.03em;
  color:rgba(246,232,213,.62);border-top:1px solid rgba(216,189,139,.18);padding-top:16px;
}
@media (max-width:860px){
  .vfeat{grid-template-columns:1fr;gap:26px}
  .vfeat__side{grid-template-columns:1fr 1fr;gap:16px}
}
@media (max-width:600px){
  .vfeat__side{grid-template-columns:1fr}
  .vcard--hero figcaption b{font-size:16px}
}

/* 02 落地实拍 */
.lgrid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(16px,2.4vw,30px)}
@media (max-width:880px){.lgrid{grid-template-columns:1fr}}
.lcard figcaption b{color:var(--ink);font-size:15.5px}
.lcard figcaption span{color:var(--muted)}

/* ---------- 9. 落地案例 ---------- */
.gal{
  display:grid;grid-template-columns:minmax(240px,.66fr) minmax(0,1.72fr);
  gap:clamp(22px,3.4vw,46px);align-items:start;
}
.gal__nav{display:flex;flex-direction:column;border-top:1px solid rgba(216,189,139,.26);align-self:stretch}
.gal__nav button{
  display:grid;grid-template-columns:auto 1fr auto;gap:12px;align-items:baseline;
  text-align:left;padding:14px 12px 14px 4px;min-height:62px;
  border-bottom:1px solid rgba(216,189,139,.16);
  color:rgba(246,232,213,.74);
  transition:color .28s var(--ease),background .28s var(--ease),padding .28s var(--ease);
  position:relative;
}
.gal__nav button i{
  font-family:var(--display);font-style:normal;font-size:12px;letter-spacing:.06em;
  color:var(--gold);opacity:.7;transition:.28s var(--ease);
}
.gal__nav button b{font-weight:500;font-size:15px;letter-spacing:.03em;display:block;line-height:1.5}
.gal__nav button small{display:block;font-size:11.5px;color:rgba(246,232,213,.55);margin-top:3px;letter-spacing:.02em;line-height:1.5}
.gal__nav button em{
  font-style:normal;font-size:11px;letter-spacing:.06em;color:rgba(216,189,139,.8);
  font-variant-numeric:tabular-nums;align-self:center;white-space:nowrap;
}
.gal__nav button::before{
  content:"";position:absolute;left:0;top:50%;width:2px;height:0;background:var(--gold);
  transform:translateY(-50%);transition:height .3s var(--ease);
}
.gal__nav button:hover{color:#FFF6E6;background:rgba(255,255,255,.03)}
.gal__nav button[aria-pressed="true"]{color:#FFF6E6;background:rgba(255,255,255,.055);padding-left:14px}
.gal__nav button[aria-pressed="true"]::before{height:58%}
.gal__nav button[aria-pressed="true"] i{opacity:1}
.gal__nav button[aria-pressed="true"] small{color:rgba(246,232,213,.8)}

.gal__main{min-width:0}
.gal__stage{
  position:relative;overflow:hidden;border:1px solid rgba(216,189,139,.28);
  background:radial-gradient(120% 120% at 50% 0%,#2B0B0B,#170606 70%);
  aspect-ratio:16/9;border-radius:var(--r);
}
.gal__img{
  width:100%;height:100%;object-fit:contain;
  animation:galIn .55s var(--ease) both;
}
@keyframes galIn{from{opacity:0;transform:scale(.995)}to{opacity:1;transform:none}}
@media (prefers-reduced-motion:reduce){.gal__img{animation:none}}
.gal__tag{
  position:absolute;left:12px;top:12px;z-index:2;
  font-size:10.5px;letter-spacing:.16em;line-height:1;
  padding:6px 9px;border-radius:1px;color:#FFF6E6;
  background:rgba(84,13,13,.86);box-shadow:inset 0 0 0 1px rgba(216,189,139,.32);
}
.gal__zoom{
  position:absolute;right:10px;bottom:10px;z-index:2;
  width:40px;height:40px;border-radius:50%;
  border:1px solid rgba(216,189,139,.42);background:rgba(20,8,8,.42);
  transition:background .3s var(--ease),border-color .3s var(--ease);
}
.gal__zoom::before,.gal__zoom::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--gold-lt);
}
.gal__zoom::before{width:11px;height:11px;border:1.5px solid var(--gold-lt);background:none;border-radius:50%;transform:translate(-50%,-50%)}
.gal__zoom::after{width:7px;height:1.5px;transform:translate(2px,5px) rotate(45deg);transform-origin:left center}
.gal__zoom:hover{background:rgba(216,189,139,.2);border-color:var(--gold-lt)}
.gal__bar{
  display:flex;align-items:flex-end;justify-content:space-between;gap:18px;flex-wrap:wrap;
  margin-top:14px;padding-top:14px;border-top:1px solid rgba(216,189,139,.24);
}
.gal__cap b{display:block;font-family:var(--display);font-size:16px;letter-spacing:.04em;color:#FFF6E6}
.gal__cap span{display:block;font-size:12.5px;color:rgba(246,232,213,.7);margin-top:4px;letter-spacing:.02em}
.gal__ctrl{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.gal__arrow{
  width:44px;height:44px;border-radius:50%;
  border:1px solid rgba(216,189,139,.4);position:relative;
  transition:background .28s var(--ease),border-color .28s var(--ease);
}
.gal__arrow::after{
  content:"";position:absolute;left:50%;top:50%;width:7px;height:7px;
  border-left:1.5px solid var(--gold-lt);border-bottom:1.5px solid var(--gold-lt);
  transform:translate(-30%,-50%) rotate(45deg);
}
.gal__arrow--next::after{transform:translate(-70%,-50%) rotate(-135deg)}
.gal__arrow:hover{background:rgba(216,189,139,.14);border-color:var(--gold-lt)}
.gal__arrow:disabled{opacity:.3;cursor:default}
.gal__arrow:disabled:hover{background:none;border-color:rgba(216,189,139,.4)}
.gal__count{font-size:12px;letter-spacing:.1em;color:rgba(246,232,213,.72);font-variant-numeric:tabular-nums;min-width:58px;text-align:center}

.gal__rail{
  display:flex;gap:8px;margin-top:16px;overflow-x:auto;padding-bottom:6px;
  scrollbar-width:thin;scrollbar-color:rgba(216,189,139,.4) transparent;
}
.gal__rail::-webkit-scrollbar{height:4px}
.gal__rail::-webkit-scrollbar-thumb{background:rgba(216,189,139,.35);border-radius:2px}
.gal__thumb{
  position:relative;flex:0 0 auto;width:104px;aspect-ratio:4/3;
  border:1px solid rgba(216,189,139,.24);overflow:hidden;border-radius:1px;
  transition:border-color .3s var(--ease),opacity .3s var(--ease);
}
.gal__thumb img{width:100%;height:100%;object-fit:cover;opacity:.55;transition:opacity .3s var(--ease),transform .5s var(--ease)}
.gal__thumb:hover img{opacity:.9}
.gal__thumb[aria-pressed="true"]{border-color:var(--gold-lt)}
.gal__thumb[aria-pressed="true"] img{opacity:1;transform:scale(1.02)}
.gal__thumb:focus-visible{outline-offset:2px}

@media (max-width:900px){
  .gal{grid-template-columns:1fr;gap:20px}
  .gal__nav{
    flex-direction:row;overflow-x:auto;border-top:0;gap:8px;padding-bottom:6px;
    scrollbar-width:none;
  }
  .gal__nav::-webkit-scrollbar{display:none}
  .gal__nav button{
    flex:0 0 auto;grid-template-columns:auto auto;min-height:44px;
    padding:10px 14px;border:1px solid rgba(216,189,139,.26);border-radius:2px;gap:8px;
  }
  .gal__nav button::before{display:none}
  .gal__nav button[aria-pressed="true"]{padding-left:14px;background:rgba(255,255,255,.09)}
  .gal__nav button small,.gal__nav button em{display:none}
  .gal__nav button b{font-size:13.5px;white-space:nowrap}
  .gal__stage{aspect-ratio:4/3}
  .gal__bar{margin-top:12px;padding-top:12px}
  .gal__cap b{font-size:15px}
  .gal__thumb{width:82px}
}

/* ---------- 10. 说明块 + 配置表 ---------- */
.notice{
  display:flex;gap:16px;align-items:flex-start;
  padding:16px 18px;border:1px solid var(--line-gold);border-left:2px solid var(--gold);
  background:rgba(241,232,216,.6);margin-bottom:clamp(22px,3vw,34px);
}
.notice b{
  flex:0 0 auto;font-weight:400;font-size:10.5px;letter-spacing:.16em;color:#FFF6E6;
  background:var(--red-800);padding:4px 8px;border-radius:1px;margin-top:2px;
}
.notice p{font-size:13.5px;line-height:1.75;color:var(--ink-2);letter-spacing:.01em}

.tbl-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;border:1px solid var(--line);background:var(--paper)}
table.spec{width:100%;border-collapse:collapse;min-width:660px;font-size:14px}
table.spec caption{
  text-align:left;padding:clamp(18px,2.4vw,26px) clamp(16px,2.2vw,28px) clamp(14px,2vw,20px);
  border-bottom:1px solid var(--line-gold);
}
table.spec caption b{display:block;font-family:var(--display);font-size:clamp(16px,1.9vw,19px);color:var(--ink);letter-spacing:.04em}
table.spec caption span{display:block;font-size:12px;color:var(--muted);margin-top:6px;letter-spacing:.05em}
table.spec thead th{
  text-align:left;font-weight:400;font-size:11px;letter-spacing:.2em;color:var(--gold-ink);
  padding:14px clamp(14px,2vw,24px);background:rgba(241,232,216,.55);
  border-bottom:1px solid var(--line-gold);white-space:nowrap;
}
table.spec thead th:last-child{text-align:center}
table.spec tr.group th{
  text-align:left;font-family:var(--display);font-size:13.5px;font-weight:700;
  color:#FFF6E6;background:var(--red-800);letter-spacing:.06em;
  padding:11px clamp(14px,2vw,24px);
}
table.spec tr.group th span{
  font-family:var(--sans);font-weight:400;font-size:11.5px;letter-spacing:.04em;
  color:rgba(246,232,213,.62);margin-left:12px;
}
table.spec td{padding:clamp(14px,1.8vw,20px) clamp(14px,2vw,24px);border-bottom:1px solid var(--line);vertical-align:top}
table.spec tr.item:last-child td{border-bottom:0}
.c-name b{display:block;font-family:var(--display);font-size:14.5px;font-weight:700;color:var(--ink);line-height:1.5;letter-spacing:.02em}
.c-name em{display:block;font-style:normal;font-size:11.5px;color:var(--gold-ink);margin-top:5px;letter-spacing:.06em}
.c-spec ul{list-style:none;margin:0;padding:0;display:grid;gap:7px}
.c-spec li{position:relative;padding-left:13px;font-size:13px;line-height:1.7;color:var(--ink-2)}
.c-spec li::before{content:"";position:absolute;left:0;top:.62em;width:4px;height:4px;background:var(--gold);border-radius:50%}
.c-qty{text-align:center;white-space:nowrap}
.c-qty b{display:block;font-family:var(--display);font-size:18px;color:var(--red-800);line-height:1.2}
.c-qty span{font-size:11.5px;color:var(--muted);letter-spacing:.06em}
/* 移动端：配置表塌缩为卡片，不留横向滚动 */
@media (max-width:760px){
  .tbl-wrap{overflow:visible;border:0;background:none}
  table.spec{min-width:0;display:block;font-size:13px}
  table.spec caption{display:block;width:100%;padding:0 0 16px;border-bottom:0}
  table.spec caption b{font-size:17px}
  table.spec thead{display:none}
  table.spec tbody{display:block}
  table.spec tr{display:block}
  table.spec tr.group{display:block;margin-top:22px}
  table.spec tr.group:first-child{margin-top:14px}
  table.spec tr.group th{
    display:block;padding:10px 14px;border-radius:2px;
    font-size:12.5px;line-height:1.5;
  }
  table.spec tr.group th span{display:block;margin:3px 0 0;font-size:11px}
  table.spec tr.item{
    display:block;background:var(--paper);
    border:1px solid var(--line);border-top:0;border-radius:0 0 2px 2px;
    padding-bottom:4px;
  }
  table.spec tr.item + tr.item{margin-top:10px;border-top:1px solid var(--line);border-radius:2px}
  table.spec td{display:block;border:0;padding:0 14px}
  .c-name{padding-top:14px}
  .c-name b{font-size:14px}
  .c-spec{padding-top:10px}
  .c-spec li{font-size:12.5px;line-height:1.65}
  .c-qty{
    text-align:left;padding:10px 14px 12px;margin-top:8px;
    border-top:1px dashed var(--line-gold);
  }
  .c-qty::before{content:"数量  ";font-size:11.5px;color:var(--muted);letter-spacing:.08em}
  .c-qty b{display:inline;font-size:13px;color:var(--red-800);margin-right:3px}
  .c-qty span{font-size:11.5px}
}

/* ---------- 11. 资源清单 ---------- */
.stats{
  display:grid;
  grid-template-columns:1.5fr repeat(4,minmax(0,1fr));
  gap:clamp(8px,1.1vw,14px);
  margin-bottom:clamp(26px,3.6vw,40px);
}
.stat{
  position:relative;text-align:left;padding:clamp(16px,2vw,24px) clamp(14px,1.7vw,20px);
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r);
  transition:background .3s var(--ease),border-color .3s var(--ease),transform .3s var(--ease);
  overflow:hidden;
}
.stat::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:linear-gradient(90deg,var(--gold),var(--red-600));
  transform:scaleX(0);transform-origin:left;transition:transform .4s var(--ease);
}
.stat b{
  display:block;font-family:var(--display);font-weight:900;
  font-size:clamp(28px,3.4vw,40px);line-height:1;letter-spacing:-.01em;
  color:var(--red-800);font-variant-numeric:tabular-nums;
  transition:color .3s var(--ease);
}
.stat span{display:block;font-size:13.5px;color:var(--ink);letter-spacing:.05em;margin-top:10px;font-weight:600}
.stat em{display:block;font-style:normal;font-size:11.5px;color:#6B5B57;margin-top:4px;letter-spacing:.02em;line-height:1.5}
.stat:first-child{background:var(--red-800);border-color:var(--red-800)}
.stat:first-child b{color:var(--gold-lt);font-size:clamp(38px,5.4vw,64px)}
.stat:first-child span{color:#FFF6E6}
.stat:first-child em{color:rgba(246,232,213,.74)}
.stat:first-child::after{display:none}
.stat:hover{transform:translateY(-2px);border-color:var(--line-gold)}
.stat.is-on{border-color:var(--gold)}
.stat.is-on::after{transform:scaleX(1)}
.stat.is-on:not(:first-child){background:#FFF8EB}
.stat.is-on:not(:first-child) b{color:var(--red-700)}
@media (max-width:980px){
  .stats{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stat:first-child{grid-column:1 / -1}
}
@media (max-width:520px){
  .stats{grid-template-columns:1fr 1fr}
  .stat em{font-size:11px}
}

.res__tools{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  margin-bottom:10px;
}
.res__hint{font-size:12px;color:var(--muted);letter-spacing:.03em}
.res__toggle{
  display:inline-flex;align-items:center;gap:9px;
  min-height:44px;padding:0 14px;border-radius:2px;
  border:1px solid var(--line-gold);color:var(--red-800);
  font-size:13px;letter-spacing:.06em;
  transition:background .28s var(--ease),border-color .28s var(--ease),color .28s var(--ease);
}
.res__toggle:hover{background:var(--cream-2);border-color:var(--gold)}
.res__toggle i{
  position:relative;width:11px;height:11px;flex:0 0 auto;
}
.res__toggle i::before,.res__toggle i::after{
  content:"";position:absolute;left:50%;top:50%;background:currentColor;
  transition:transform .35s var(--ease),opacity .3s var(--ease);
}
.res__toggle i::before{width:11px;height:1.5px;transform:translate(-50%,-50%)}
.res__toggle i::after{width:1.5px;height:11px;transform:translate(-50%,-50%)}
.res__toggle[aria-expanded="true"] i::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.res__toggle[aria-expanded="true"]{background:var(--red-800);border-color:var(--red-800);color:#FFF6E6}

.res{border-top:1px solid var(--line-gold)}
.rcat{border-bottom:1px solid var(--line)}
.rcat__head{
  display:grid;grid-template-columns:auto minmax(0,1.1fr) minmax(0,1.6fr) auto auto;
  gap:clamp(10px,2vw,26px);align-items:center;
  width:100%;text-align:left;padding:clamp(14px,1.8vw,19px) 2px;
  min-height:64px;transition:background .28s var(--ease),padding .28s var(--ease);
}
.rcat__head:hover{background:rgba(241,232,216,.5)}
.rcat__head i{
  font-family:var(--display);font-style:normal;font-size:11.5px;letter-spacing:.08em;
  color:var(--gold-ink);opacity:.8;font-variant-numeric:tabular-nums;
}
.rcat__head .t{font-family:var(--display);font-size:15.5px;font-weight:700;color:var(--ink);letter-spacing:.03em;line-height:1.45}
.rcat__head .d{font-size:12.5px;color:var(--muted);line-height:1.65;letter-spacing:.01em}
.rcat__head .n{
  font-size:12px;letter-spacing:.04em;color:var(--red-700);white-space:nowrap;
  font-variant-numeric:tabular-nums;padding:4px 9px;border:1px solid rgba(176,138,70,.4);border-radius:1px;
  background:rgba(246,231,226,.7);
}
.rcat__head .sign{position:relative;width:14px;height:14px;flex:0 0 auto}
.rcat__head .sign::before,.rcat__head .sign::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--red-700);
  transition:transform .35s var(--ease),opacity .3s var(--ease);
}
.rcat__head .sign::before{width:13px;height:1.5px;transform:translate(-50%,-50%)}
.rcat__head .sign::after{width:1.5px;height:13px;transform:translate(-50%,-50%)}
.rcat[data-open="true"] .rcat__head{background:rgba(241,232,216,.55)}
.rcat[data-open="true"] .rcat__head .sign::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}

.rcat__panel{padding:4px 2px clamp(18px,2.4vw,26px)}
.rcat__panel[hidden]{display:none}
.rsub{margin-top:16px}
.rsub:first-child{margin-top:0}
.rsub__hd{
  display:flex;align-items:baseline;gap:10px;flex-wrap:wrap;
  padding-bottom:7px;border-bottom:1px dashed rgba(176,138,70,.3);
}
.rsub__hd b{font-family:var(--display);font-size:13px;font-weight:700;color:var(--ink);letter-spacing:.04em}
.rsub__hd span{font-size:11px;color:var(--gold-ink);letter-spacing:.08em}
.chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}
.chips span{
  font-size:12px;line-height:1.5;letter-spacing:.01em;color:var(--ink-2);
  padding:4px 9px;background:var(--paper);border:1px solid var(--line);border-radius:1px;
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.chips span:hover{border-color:var(--line-gold);color:var(--red-800)}
.chips span i{font-style:normal;font-size:10px;color:var(--gold-ink);margin-left:6px;letter-spacing:.04em}
.rcat.is-hidden{display:none}
.res__note{
  margin-top:clamp(20px,2.6vw,30px);font-size:12.5px;line-height:1.8;letter-spacing:.02em;
  color:var(--muted);padding-top:16px;border-top:1px solid var(--line-gold);
}
@media (max-width:860px){
  .rcat__head{grid-template-columns:auto minmax(0,1fr) auto auto;gap:8px 10px}
  .rcat__head .d{display:none}
  .rcat__head .t{font-size:14.5px}
  .rcat__head .n{font-size:11px;padding:3px 7px}
}
@media (max-width:480px){
  .rcat__head{grid-template-columns:auto minmax(0,1fr) auto;gap:6px 8px;padding-block:13px}
  .rcat__head .n{display:none}
}

/* ---------- 12. 页脚 ---------- */
.foot{
  position:relative;background:var(--red-900);color:rgba(246,232,213,.7);
  padding-block:clamp(52px,7vw,92px) 30px;overflow:hidden;
}
.foot::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(110% 90% at 0% 0%,rgba(142,26,28,.55),transparent 60%),
    radial-gradient(80% 120% at 100% 100%,rgba(84,13,13,.9),transparent 62%);
}
.foot h2{
  font-size:clamp(24px,3.4vw,40px);color:#FFF7EA;line-height:1.38;letter-spacing:.01em;
  max-width:22em;text-wrap:balance;
}
.foot__lead{margin-top:16px;font-size:15px;line-height:1.85;color:rgba(246,232,213,.62);max-width:42ch}
.foot__bottom{
  margin-top:clamp(38px,5vw,64px);padding-top:20px;
  border-top:1px solid rgba(216,189,139,.2);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:11.5px;letter-spacing:.04em;color:rgba(246,232,213,.58);
}

@media (max-width:600px){
  /* 底部给悬浮回顶按钮留出空间，避免压住版权行 */
  .foot{padding-bottom:92px}
}

/* ---------- 13. 放大查看 + 回顶 ---------- */
.lightbox{
  position:fixed;inset:0;z-index:120;
  background:rgba(16,4,4,.975);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  padding:clamp(16px,4vw,48px);gap:14px;
  animation:lbIn .25s var(--ease) both;
}
.lightbox[hidden]{display:none}
@keyframes lbIn{from{opacity:0}to{opacity:1}}
.lightbox__img{
  max-width:100%;max-height:82vh;object-fit:contain;
  box-shadow:0 30px 80px -30px #000;
}
.lightbox__cap{font-size:12.5px;letter-spacing:.06em;color:rgba(246,232,213,.7);text-align:center}
.lightbox__close{
  position:absolute;right:clamp(14px,3vw,32px);top:clamp(14px,3vw,32px);
  width:46px;height:46px;border-radius:50%;
  border:1px solid rgba(216,189,139,.4);
}
.lightbox__close::before,.lightbox__close::after{
  content:"";position:absolute;left:50%;top:50%;width:16px;height:1.5px;background:var(--gold-lt);
}
.lightbox__close::before{transform:translate(-50%,-50%) rotate(45deg)}
.lightbox__close::after{transform:translate(-50%,-50%) rotate(-45deg)}
.lightbox__close:hover{background:rgba(216,189,139,.16)}

.to-top{
  position:fixed;right:clamp(14px,2.4vw,26px);bottom:clamp(14px,2.4vw,26px);z-index:70;
  width:46px;height:46px;border-radius:50%;
  background:rgba(84,13,13,.9);border:1px solid rgba(216,189,139,.4);
  opacity:0;pointer-events:none;transform:translateY(10px);
  transition:opacity .35s var(--ease),transform .35s var(--ease);
}
.to-top::after{
  content:"";position:absolute;left:50%;top:50%;width:8px;height:8px;
  border-left:1.5px solid var(--gold-lt);border-top:1.5px solid var(--gold-lt);
  transform:translate(-50%,-30%) rotate(45deg);
}
.to-top.is-on{opacity:1;pointer-events:auto;transform:none}
.to-top:hover{background:var(--red-800)}