/* 高塔 GAOTA — 站内样式
   设计约束：夜空底 + 星金主色 + 宋体标题 + 细金线；不用卡片阴影堆叠、不用圆角糖果、不用渐变光斑。 */

:root{
  --ink:#05080f;
  --ink-2:#080d18;
  --ink-3:#0c1424;
  --paper:#e9edf5;
  --paper-dim:#bfc9d8;
  --paper-faint:#8e9bae;
  --gold:#d8b269;
  --gold-dim:rgba(216,178,105,.34);
  --line:rgba(216,178,105,.16);
  --line-2:rgba(233,237,245,.09);
  --maxw:1180px;
  --serif:"Songti SC","Noto Serif SC","Source Han Serif SC",SimSun,"STSong",serif;
  --sans:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Segoe UI",system-ui,sans-serif;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--ink);
  color:var(--paper);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
::selection{background:rgba(216,178,105,.26);color:#fff}

#sky{position:fixed;inset:0;width:100%;height:100%;z-index:0;display:block}
#veil{
  position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(120% 80% at 50% -10%, rgba(30,48,84,.55) 0%, rgba(5,8,15,0) 60%),
    linear-gradient(180deg, rgba(5,8,15,.10) 0%, rgba(5,8,15,.42) 55%, rgba(5,8,15,.82) 100%);
}

/* ================= 首次加载序列 ================= */
#intro{
  position:fixed;inset:0;z-index:90;display:grid;place-items:center;
  background:#04070d;
  transition:opacity .9s ease, visibility .9s;
}
#intro.done{opacity:0;visibility:hidden}
.intro-mark{text-align:center;transform:translateY(-2vh)}
.im-line{
  width:0;height:1px;background:linear-gradient(90deg,transparent,var(--gold),transparent);
  margin:0 auto 26px;animation:lineGrow 1.5s cubic-bezier(.2,.7,.2,1) .15s forwards;
}
@keyframes lineGrow{to{width:230px}}
.im-word{
  font-family:var(--serif);font-size:clamp(64px,11vw,124px);line-height:1;
  letter-spacing:.24em;text-indent:.24em;color:#f2ecdd;
  opacity:0;transform:translateY(10px);
  animation:wordIn 1.5s cubic-bezier(.2,.7,.2,1) .5s forwards;
}
@keyframes wordIn{to{opacity:1;transform:none}}
.im-sub{
  margin-top:26px;font-size:11px;letter-spacing:.52em;color:var(--paper-faint);
  opacity:0;animation:wordIn 1.2s ease 1.15s forwards;
}
.intro-skip{
  position:absolute;bottom:46px;left:0;right:0;text-align:center;
  font-size:11px;letter-spacing:.34em;color:rgba(167,177,194,.5);
  opacity:0;animation:wordIn 1s ease 1.8s forwards;
}
@media (prefers-reduced-motion:reduce){
  .im-line,.im-word,.im-sub,.intro-skip{animation-duration:.01ms!important;animation-delay:0s!important}
  .im-word,.im-sub,.intro-skip{opacity:1;transform:none}
  .im-line{width:230px}
}

/* ================= 顶栏 ================= */
.site-head{
  position:fixed;top:0;left:0;right:0;z-index:60;
  border-bottom:1px solid transparent;
  transition:background .4s, border-color .4s, backdrop-filter .4s;
}
.site-head.solid{
  background:rgba(5,8,15,.72);
  backdrop-filter:blur(14px) saturate(120%);
  border-bottom-color:var(--line);
}
.head-inner{display:flex;align-items:center;gap:40px;height:76px}
.brand{display:flex;align-items:baseline;gap:11px;text-decoration:none;flex:0 0 auto}
.brand-cn{font-family:var(--serif);font-size:23px;letter-spacing:.2em;color:#f2ecdd}
.brand-en{font-size:10px;letter-spacing:.36em;color:var(--gold);opacity:.85}

.nav{display:flex;gap:34px;margin-left:auto}
.nav a{
  position:relative;text-decoration:none;color:var(--paper-dim);
  font-size:13.5px;letter-spacing:.16em;padding:5px 0;transition:color .28s;
}
.nav a::after{
  content:"";position:absolute;left:0;bottom:0;height:1px;width:0;background:var(--gold);
  transition:width .32s cubic-bezier(.2,.7,.2,1);
}
.nav a:hover{color:var(--paper)}
.nav a.on{color:#f2ecdd}
.nav a.on::after{width:100%}

.head-meta{
  display:flex;align-items:center;gap:9px;font-size:11px;letter-spacing:.2em;
  color:var(--paper-faint);flex:0 0 auto;padding-left:6px;
}
.head-meta .dot{
  width:5px;height:5px;border-radius:50%;background:var(--gold);
  box-shadow:0 0 0 3px rgba(216,178,105,.14);animation:pulse 3.4s ease-in-out infinite;
}
@keyframes pulse{0%,100%{opacity:.55}50%{opacity:1}}

/* ================= 版心 ================= */
.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 32px;position:relative;z-index:2}

.view{position:relative;z-index:2;padding:150px 0 110px}
/* JS 可用时才按路由隐藏；JS 失效时所有分页顺序展开，不会白屏 */
.js .view{display:none}
.js .view.on{display:block}
.view.on > *{animation:rise .9s cubic-bezier(.2,.7,.2,1) both}
.view.on > *:nth-child(2){animation-delay:.08s}
.view.on > *:nth-child(3){animation-delay:.16s}
.view.on > *:nth-child(4){animation-delay:.24s}
@keyframes rise{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}
@media (prefers-reduced-motion:reduce){.view.on > *{animation:none}}

.kicker{
  font-size:10.5px;letter-spacing:.42em;color:var(--gold);text-transform:uppercase;
  margin-bottom:22px;
}
h1{
  font-family:var(--serif);font-weight:400;
  font-size:clamp(34px,4.4vw,58px);line-height:1.24;letter-spacing:.06em;color:#f4efe2;
}
h2{
  font-family:var(--serif);font-weight:400;
  font-size:clamp(24px,2.6vw,34px);line-height:1.34;letter-spacing:.05em;color:#f2ecdd;
}
h3{font-family:var(--serif);font-weight:400;font-size:21px;letter-spacing:.06em;color:#f0eadd}
h4{font-size:14.5px;letter-spacing:.08em;color:#efe8d8;font-weight:600}
p{color:var(--paper-dim)}
b,strong{color:#f0eadd;font-weight:600}
.ul{
  border-bottom:1px solid var(--gold);padding-bottom:.06em;
  color:#fbf6e9;
}

.lead{
  margin-top:26px;max-width:62ch;font-size:16.5px;line-height:1.95;color:#c8d1e0;
}
.hero{padding-top:6px}
.hero-title{max-width:20ch}
.hero-actions{display:flex;gap:14px;margin-top:44px;flex-wrap:wrap}

.btn{
  display:inline-flex;align-items:center;gap:12px;
  padding:14px 26px;border:1px solid rgba(216,178,105,.62);border-radius:2px;
  color:#f6f1e3;text-decoration:none;font-size:13.5px;letter-spacing:.16em;
  background:rgba(216,178,105,.13);
  transition:background .3s,border-color .3s,transform .3s;
}
.btn em{font-style:normal;color:var(--gold);transition:transform .3s}
.btn:hover{background:rgba(216,178,105,.13);border-color:var(--gold);transform:translateY(-1px)}
.btn:hover em{transform:translateX(4px)}
.btn.ghost{background:transparent;border-color:var(--line-2);color:var(--paper-dim)}
.btn.ghost:hover{border-color:var(--gold-dim);color:#f0eadd;background:rgba(216,178,105,.05)}

/* 数字条 */
.stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  margin-top:88px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background:var(--line);
}
.stat{background:var(--ink);padding:26px 24px;transition:background .4s}
.stat:hover{background:var(--ink-3)}
.s-n{font-family:var(--serif);font-size:38px;line-height:1;color:#f4efe2;letter-spacing:.04em}
.s-k{margin-top:10px;font-size:12px;letter-spacing:.18em;color:#9dabbd}

.rule{height:1px;background:linear-gradient(90deg,var(--line),rgba(216,178,105,.03));margin:96px 0 8px}
.sec-head{margin:64px 0 44px}
.sec-head h2{margin-top:14px}
.sec-lead{margin-top:14px;max-width:58ch;color:var(--paper-dim)}

/* 项目卡 */
.cards{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line)}
.card{
  display:block;text-decoration:none;background:var(--ink);padding:40px 38px 34px;
  transition:background .45s;position:relative;overflow:hidden;
}
.card::before{
  content:"";position:absolute;inset:0;background:radial-gradient(90% 60% at 0% 0%,rgba(216,178,105,.09),transparent 62%);
  opacity:0;transition:opacity .5s;
}
.card:hover{background:var(--ink-3)}
.card:hover::before{opacity:1}
.c-idx{font-family:var(--serif);font-size:12px;letter-spacing:.3em;color:var(--gold);margin-bottom:26px}
.card h3{margin-bottom:8px}
.c-en{font-size:11px;letter-spacing:.22em;color:var(--paper-faint);text-transform:uppercase}
.c-desc{margin-top:20px;font-size:14.5px;line-height:1.9;color:#b7c1d1;max-width:38ch}
.c-metrics{
  display:flex;gap:22px;flex-wrap:wrap;margin-top:26px;padding-top:20px;
  border-top:1px solid var(--line-2);font-size:11.5px;letter-spacing:.14em;color:var(--gold);
}

/* 分栏 */
.split{display:grid;grid-template-columns:.9fr 1.35fr;gap:64px;margin-top:64px}
.principles{list-style:none;counter-reset:p}
.principles li{
  counter-increment:p;position:relative;padding:0 0 26px 54px;
  border-bottom:1px solid var(--line-2);margin-bottom:26px;color:#b7c1d1;font-size:15px;line-height:1.9;
}
.principles li:last-child{border-bottom:none;margin-bottom:0;padding-bottom:0}
.principles li::before{
  content:counter(p,decimal-leading-zero);position:absolute;left:0;top:1px;
  font-family:var(--serif);font-size:13px;letter-spacing:.16em;color:var(--gold);opacity:.8;
}
.principles b{display:block;margin-bottom:6px;color:#f2ecdd;font-size:15.5px}

/* 页头 */
.page-head{padding-bottom:8px}
.page-head h1{margin-top:6px}

/* 项目详情 */
.project{
  display:grid;grid-template-columns:.72fr 1.6fr;gap:70px;
  padding:72px 0 84px;
}
.p-side{position:sticky;top:110px;align-self:start}
.p-idx{font-family:var(--serif);font-size:12px;letter-spacing:.3em;color:var(--gold);margin-bottom:22px}
.p-sub{margin-top:10px;font-size:13px;letter-spacing:.1em;color:var(--paper-faint)}
.p-meta{margin-top:34px;border-top:1px solid var(--line)}
.p-meta > div{display:flex;gap:16px;padding:12px 0;border-bottom:1px solid var(--line-2)}
.p-meta dt{flex:0 0 46px;font-size:11.5px;letter-spacing:.16em;color:var(--paper-faint)}
.p-meta dd{font-size:13px;color:var(--paper-dim)}
.p-lead{font-size:16px;line-height:2;color:#c1cbda;max-width:64ch}
.p-blocks{display:grid;grid-template-columns:repeat(3,1fr);gap:34px;margin-top:44px}
.blk{border-top:1px solid var(--line);padding-top:20px}
.blk h4{margin-bottom:10px}
.blk p{font-size:13.5px;line-height:1.85;color:#a3b0c2}
.p-note{margin-top:26px;font-size:12.5px;line-height:1.9;color:var(--paper-faint);max-width:66ch;
        border-left:1px solid var(--gold-dim);padding-left:18px}

/* 表格 */
.metrics{width:100%;border-collapse:collapse;margin-top:44px;font-size:13.5px}
.metrics th{
  text-align:left;font-weight:400;font-size:10.5px;letter-spacing:.24em;color:var(--gold);
  padding:0 14px 12px 0;border-bottom:1px solid var(--line);
}
.metrics td{
  padding:14px 14px 14px 0;border-bottom:1px solid var(--line-2);color:#b7c1d1;
}
.metrics td.num{color:#f2ecdd;font-family:var(--serif);font-size:14.5px;letter-spacing:.03em;white-space:nowrap}
.metrics tr:hover td{background:rgba(216,178,105,.03)}
.metrics.wide td:nth-child(2){min-width:220px}

/* 团队 */
.members{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);margin-top:8px}
.member{background:var(--ink);padding:34px 26px 30px;transition:background .4s}
.member:hover{background:var(--ink-3)}
.m-idx{font-family:var(--serif);font-size:11px;letter-spacing:.3em;color:var(--gold);margin-bottom:24px}
.m-role{margin-top:10px;font-size:11.5px;letter-spacing:.1em;color:var(--gold);opacity:.9}
.m-desc{margin-top:16px;font-size:13px;line-height:1.85;color:#a3b0c2}

/* 能力 */
.spec{margin-top:8px}
.spec-head h2{margin-top:14px}
.caps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:44px;margin-top:72px}
.cap{border-top:1px solid var(--line);padding-top:22px}
.cap h3{margin-top:14px;font-size:19px}
.cap p{margin-top:14px;font-size:13.5px;line-height:1.9;color:#a3b0c2}

/* 联系 */
.contact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);border:1px solid var(--line);margin-top:8px}
.cbox{background:var(--ink);padding:32px 30px}
.cbox-k{font-size:10.5px;letter-spacing:.3em;color:var(--gold);text-transform:uppercase}
.cbox-v{margin-top:14px;font-family:var(--serif);font-size:19px;letter-spacing:.04em;color:#f4efe2}
.cbox-v.sub{margin-top:8px;font-size:15px;color:#b7c1d1}
.cbox.span2{grid-column:1 / -1}
.cbox-v.link{text-decoration:none;display:inline-block;border-bottom:1px solid var(--gold-dim);padding-bottom:3px;transition:border-color .3s,color .3s}
.cbox-v.link:hover{border-color:var(--gold);color:#fbf6e9}

/* 页脚 */
.site-foot{
  position:relative;z-index:2;border-top:1px solid var(--line);
  margin-top:40px;padding:46px 0 54px;
  background:linear-gradient(180deg,rgba(5,8,15,0),rgba(4,6,11,.9));
}
.foot-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.foot-brand{display:flex;align-items:baseline;gap:10px}
.foot-en{font-size:9.5px;letter-spacing:.36em;color:var(--gold);opacity:.8}
.foot-copy{font-size:11.5px;letter-spacing:.14em;color:#8e9bae}
.foot-copy .sep{margin:0 10px;opacity:.5}

/* ================= 响应式 ================= */
@media (max-width:1000px){
  .stats{grid-template-columns:repeat(2,1fr)}
  .cards{grid-template-columns:1fr}
  .split{grid-template-columns:1fr;gap:36px}
  .project{grid-template-columns:1fr;gap:38px;padding:52px 0 64px}
  .p-side{position:static}
  .p-blocks{grid-template-columns:1fr;gap:26px}
  .members{grid-template-columns:repeat(2,1fr)}
  .caps-grid{grid-template-columns:1fr;gap:32px}
  .contact-grid{grid-template-columns:1fr}
  .head-inner{gap:18px}
  .nav{gap:20px}
  .head-meta{display:none}
}
@media (max-width:720px){
  body{font-size:15px}
  .wrap{padding:0 20px}
  .view{padding:120px 0 80px}
  .nav{gap:14px;font-size:12px;letter-spacing:.06em}
  .brand-en{display:none}
  .stats{margin-top:56px}
  .stat{padding:20px 16px}
  .s-n{font-size:30px}
  .members{grid-template-columns:1fr}
  .metrics{font-size:12.5px}
  .metrics td.num{font-size:13px;white-space:normal}
  .lead{font-size:15px}
  .foot-inner{flex-direction:column;align-items:flex-start;gap:14px}
}

/* ================= 作品 ================= */
.works{display:grid;grid-template-columns:repeat(2,1fr);gap:54px 44px;margin-top:10px}
.w-shot{position:relative;aspect-ratio:4/3;overflow:hidden;border:1px solid rgba(216,178,105,.22);
        background:#f2efe6;padding:18px;display:grid;place-items:center;
        box-shadow:0 24px 50px -34px rgba(0,0,0,.95)}
.w-shot img{max-width:100%;max-height:100%;width:auto;height:auto;display:block;
            box-shadow:0 8px 22px -14px rgba(0,0,0,.55);
            transition:transform .9s cubic-bezier(.2,.7,.2,1)}
.work:hover .w-shot img{transform:scale(1.02)}
.w-body{padding-top:20px;border-top:1px solid var(--line-2);margin-top:20px}
.w-h{display:flex;align-items:baseline;gap:14px}
.w-no{font-family:var(--serif);font-size:11px;letter-spacing:.3em;color:var(--gold)}
.w-h h3{font-size:19.5px}
.w-d{margin-top:12px;font-size:13.5px;line-height:1.88;color:#a9b5c7;max-width:46ch}
.w-tags{display:flex;gap:16px;flex-wrap:wrap;margin-top:16px;
        font-size:11px;letter-spacing:.12em;color:var(--gold);opacity:.92}
@media (max-width:820px){
  .works{grid-template-columns:1fr;gap:40px}
}

/* 截图/打印用：关闭入场动画 */
.nofx .view.on > *{animation:none!important;opacity:1!important;transform:none!important}

/* ================= 作品卡牌轮播（位移式，JS 驱动） ================= */
:root{--cardw:min(520px,74vw)}
.deck-wrap{position:relative;z-index:2;margin-top:6px}
.deck{
  position:relative;overflow:hidden;padding:40px 0 6px;
  cursor:grab;touch-action:pan-y;
}
.deck.drag{cursor:grabbing}
.deck-track{
  display:flex;align-items:flex-start;will-change:transform;
  transform:translate3d(0,0,0);backface-visibility:hidden;
}
.wcard{
  flex:0 0 auto;width:var(--cardw);padding:0 18px;margin:0;
  transform-origin:50% 0;will-change:transform,opacity;
}
.wc-plate{
  aspect-ratio:4/3;background:#f2efe6;border:1px solid rgba(216,178,105,.22);
  padding:16px;display:grid;place-items:center;overflow:hidden;
  box-shadow:0 30px 70px -46px rgba(0,0,0,.95);
}
.wc-plate img{max-width:100%;max-height:100%;width:auto;height:auto;display:block;
  box-shadow:0 8px 22px -16px rgba(0,0,0,.6);-webkit-user-drag:none;user-select:none}
.wc-meta{margin-top:20px;border-top:1px solid var(--line-2);padding-top:16px}
.wc-h{display:flex;align-items:baseline;gap:13px}
.wc-no{font-family:var(--serif);font-size:11px;letter-spacing:.3em;color:var(--gold)}
.wc-h h3{font-size:19px}
.wc-d{margin-top:10px;font-size:13px;line-height:1.85;color:#a9b5c7}
.wc-tags{display:flex;gap:14px;flex-wrap:wrap;margin-top:12px;
  font-size:10.5px;letter-spacing:.12em;color:var(--gold);opacity:.9}
.deck-foot{display:flex;align-items:center;gap:24px;margin-top:22px;
  padding-top:18px;border-top:1px solid var(--line-2)}
.deck-count{display:flex;align-items:baseline;gap:6px;font-family:var(--serif)}
.deck-count b{font-size:22px;color:#f2ecdd;font-weight:400;letter-spacing:.06em}
.deck-count i{font-style:normal;color:var(--gold);opacity:.7}
.deck-count em{font-style:normal;font-size:13px;color:#77839a}
.deck-title{font-family:var(--serif);font-size:14px;letter-spacing:.1em;color:#c1cbda;flex:1}
.deck-nav{display:flex;gap:10px}
.deck-nav button{
  width:44px;height:40px;cursor:pointer;background:rgba(216,178,105,.08);
  border:1px solid rgba(216,178,105,.3);border-radius:2px;color:#e9edf5;
  font-size:15px;line-height:1;transition:background .3s,border-color .3s,transform .3s;
}
.deck-nav button:hover{background:rgba(216,178,105,.2);border-color:var(--gold);transform:translateY(-1px)}
@media (max-width:760px){
  :root{--cardw:84vw}
  .deck-foot{flex-wrap:wrap;gap:14px}
  .deck-title{order:3;flex:1 0 100%}
}