/* =============================================================================
   糖白 · TangBai — 星空 / 星轨主题个人主页
   -----------------------------------------------------------------------------
   分区索引
     01  设计令牌 (tokens)
     02  重置与基础
     03  背景星空层
     04  通用：容器 / 标题 / 按钮 / 标签
     05  滚动进度 + 导航
     06  首屏 Hero 与长曝光星轨
     07  关于我
     08  作品展示
     09  联系方式
     10  页脚 / 提示条
     11  入场动效
     12  响应式
     13  降低动效偏好
   ============================================================================= */

/* ---------------------------------------------------------------- 01 令牌 --- */
:root{
  /* 夜空层级 */
  --sky-0:#04050c;
  --sky-1:#070a16;
  --sky-2:#0b1024;
  --sky-3:#131b3c;

  /* 内容色 */
  --ink:#e9f1ff;
  --ink-2:#a8b5d4;
  --ink-3:#6d7998;

  /* 线条 */
  --line:rgba(150,180,255,.13);
  --line-2:rgba(150,180,255,.26);

  /* 星光 */
  --cyan:#8fd8ff;
  --violet:#9b8cff;
  --magenta:#ff8fc7;
  --gold:#ffd79a;

  --glow-cyan:0 0 22px rgba(143,216,255,.45);
  --shadow-card:0 22px 60px -28px rgba(0,0,0,.95);

  --r-sm:10px;
  --r:14px;
  --r-lg:20px;

  --wrap:1160px;
  --nav-h:70px;

  --font-display:"Source Han Serif SC","Noto Serif SC","Songti SC","SimSun",Georgia,"Times New Roman",serif;
  --font-body:system-ui,-apple-system,"Segoe UI","Microsoft YaHei","PingFang SC","Hiragino Sans GB",sans-serif;
  --font-mono:"Cascadia Mono","JetBrains Mono",Consolas,"SF Mono",Menlo,monospace;

  --ease:cubic-bezier(.22,.68,.28,1);
}

/* ------------------------------------------------------------ 02 重置基础 --- */
*,*::before,*::after{box-sizing:border-box}

html{
  scroll-behavior:smooth;
  scroll-padding-top:calc(var(--nav-h) + 18px);
  -webkit-text-size-adjust:100%;
}

body{
  margin:0;
  min-height:100%;
  background:
    radial-gradient(1100px 720px at 78% 6%, rgba(28,40,92,.55), transparent 62%),
    radial-gradient(900px 700px at 6% 42%, rgba(58,36,96,.32), transparent 66%),
    linear-gradient(180deg,var(--sky-1) 0%,var(--sky-0) 42%,var(--sky-0) 100%);
  background-attachment:fixed,fixed,scroll;
  color:var(--ink);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
@supports (overflow:clip){ body{overflow-x:clip} }

img,svg,canvas{display:block;max-width:100%}
img{height:auto}

a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}

h1,h2,h3,p,figure,ul{margin:0}
ul{padding:0;list-style:none}

::selection{background:rgba(143,216,255,.28);color:#fff}

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

::-webkit-scrollbar{width:11px;height:11px}
::-webkit-scrollbar-track{background:#05070f}
::-webkit-scrollbar-thumb{
  background:linear-gradient(180deg,#2a3a6e,#161d3a);
  border:3px solid #05070f;
  border-radius:99px;
}
::-webkit-scrollbar-thumb:hover{background:linear-gradient(180deg,#3d548f,#1d2750)}

/* --------------------------------------------------------- 03 背景星空层 --- */
body::before{
  content:"";
  position:fixed;
  inset:-420px;
  z-index:0;
  pointer-events:none;
  background-image:
    radial-gradient(1.4px 1.4px at 24px 32px, rgba(255,255,255,.85), transparent),
    radial-gradient(1px 1px at 180px 120px, rgba(200,225,255,.6), transparent),
    radial-gradient(1.2px 1.2px at 320px 60px, rgba(255,255,255,.7), transparent),
    radial-gradient(1px 1px at 90px 260px, rgba(255,231,196,.55), transparent),
    radial-gradient(1.6px 1.6px at 420px 300px, rgba(255,255,255,.75), transparent),
    radial-gradient(1px 1px at 260px 380px, rgba(178,216,255,.6), transparent),
    radial-gradient(1.1px 1.1px at 520px 190px, rgba(255,255,255,.5), transparent);
  background-size:600px 520px,600px 520px,600px 520px,600px 520px,600px 520px,600px 520px,600px 520px;
  background-position:0 0,140px 90px,300px 210px,60px 340px,410px 40px,220px 470px,530px 300px;
  opacity:.55;
  animation:star-drift 320s linear infinite;
  will-change:transform;
}
@keyframes star-drift{
  from{transform:translate3d(0,0,0)}
  to{transform:translate3d(-600px,-520px,0)}
}

main,.foot,.nav,.progress{position:relative;z-index:1}

/* --------------------------------------------------- 04 通用容器与排版 --- */
.wrap{
  width:100%;
  max-width:var(--wrap);
  margin:0 auto;
  padding:0 28px;
}

.sec{
  position:relative;
  padding:clamp(72px,9vw,116px) 0;
}
.sec + .sec{border-top:1px solid rgba(150,180,255,.07)}
.sec + .sec::before{
  content:"";
  position:absolute;
  top:-3px;left:50%;
  width:5px;height:5px;
  margin-left:-2.5px;
  border-radius:50%;
  background:#dbe9ff;
  box-shadow:0 0 14px 2px rgba(143,216,255,.75);
}

.sec__head{max-width:760px;margin-bottom:clamp(36px,5vw,60px)}

.eyebrow{
  display:flex;
  align-items:center;
  gap:12px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--ink-3);
}
.eyebrow b{
  font-weight:500;
  color:var(--cyan);
  letter-spacing:.1em;
}
.eyebrow::after{
  content:"";
  flex:1;
  max-width:180px;
  height:1px;
  background:linear-gradient(90deg,var(--line-2),transparent);
}

.sec__title{
  margin-top:16px;
  font-family:var(--font-display);
  font-weight:600;
  font-size:clamp(28px,4.1vw,46px);
  line-height:1.35;
  letter-spacing:.02em;
  color:#f4f8ff;
  text-shadow:0 0 42px rgba(120,170,255,.28);
}

.sec__sub{
  margin-top:14px;
  color:var(--ink-2);
  font-size:15.5px;
}

/* 按钮 */
.btn{
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:10px;
  height:50px;
  padding:0 26px;
  border-radius:99px;
  font-size:15px;
  letter-spacing:.02em;
  white-space:nowrap;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s,background .3s,color .3s;
}
.btn--primary{
  background:linear-gradient(135deg,rgba(143,216,255,.95),rgba(155,140,255,.9));
  color:#05070f;
  font-weight:600;
  box-shadow:0 14px 40px -16px rgba(143,216,255,.85),inset 0 1px 0 rgba(255,255,255,.6);
}
.btn--primary:hover{
  transform:translateY(-2px);
  box-shadow:0 20px 52px -16px rgba(143,216,255,1),inset 0 1px 0 rgba(255,255,255,.7);
}
.btn--ghost{
  border:1px solid var(--line-2);
  color:var(--ink);
  background:rgba(255,255,255,.03);
  backdrop-filter:blur(6px);
}
.btn--ghost:hover{
  transform:translateY(-2px);
  border-color:rgba(143,216,255,.6);
  background:rgba(143,216,255,.08);
  box-shadow:0 16px 40px -22px rgba(143,216,255,.9);
}
.btn__arrow{transition:transform .3s var(--ease)}
.btn:hover .btn__arrow{transform:translate(3px,3px)}

/* 标签胶囊 */
.tags{
  display:flex;
  flex-wrap:wrap;
  gap:9px;
  margin-top:26px;
}
.tags li{
  padding:6px 14px;
  border:1px solid var(--line);
  border-radius:99px;
  background:rgba(143,216,255,.05);
  color:var(--ink-2);
  font-size:13px;
  letter-spacing:.02em;
  transition:border-color .3s,color .3s,background .3s;
}
.tags li:hover{
  border-color:rgba(143,216,255,.45);
  background:rgba(143,216,255,.1);
  color:#eaf4ff;
}

/* --------------------------------------------------- 05 进度条与导航 --- */
.progress{
  position:fixed;
  top:0;left:0;right:0;
  height:2px;
  z-index:60;
  pointer-events:none;
}
.progress__bar{
  display:block;
  height:100%;
  transform:scaleX(0);
  transform-origin:0 50%;
  background:linear-gradient(90deg,var(--cyan),var(--violet) 55%,var(--magenta));
  box-shadow:0 0 14px rgba(143,216,255,.8);
}

.nav{
  position:fixed;
  top:0;left:0;right:0;
  z-index:50;
  border-bottom:1px solid transparent;
  transition:background .35s var(--ease),border-color .35s,backdrop-filter .35s;
}
.nav.is-stuck{
  background:rgba(5,7,16,.74);
  backdrop-filter:blur(16px) saturate(150%);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  border-bottom-color:var(--line);
}
.nav__in{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:var(--nav-h);
}

.brand{
  display:flex;
  align-items:center;
  gap:11px;
  flex:none;
}
.brand__mark{
  display:grid;
  place-items:center;
  width:34px;height:34px;
  border-radius:11px;
  color:#dff0ff;
  background:radial-gradient(circle at 50% 30%,rgba(143,216,255,.22),rgba(155,140,255,.08));
  border:1px solid var(--line-2);
  box-shadow:inset 0 0 14px rgba(143,216,255,.16);
}
.brand__mark svg{filter:drop-shadow(0 0 6px rgba(143,216,255,.7))}
.brand__mark--sm{
  width:26px;height:26px;
  border-radius:9px;
}
.brand__txt{display:flex;flex-direction:column;line-height:1.1}
.brand__txt b{font-size:16px;font-weight:600;letter-spacing:.08em}
.brand__txt i{
  font-style:normal;
  font-family:var(--font-mono);
  font-size:9.5px;
  letter-spacing:.34em;
  color:var(--ink-3);
  text-transform:uppercase;
}

.nav__links{display:flex;align-items:center;gap:34px}
.nav__links a{
  position:relative;
  font-size:14.5px;
  color:var(--ink-2);
  letter-spacing:.06em;
  padding:6px 0;
  transition:color .28s;
}
.nav__links a::after{
  content:"";
  position:absolute;
  left:50%;bottom:-2px;
  width:4px;height:4px;
  margin-left:-2px;
  border-radius:50%;
  background:var(--cyan);
  opacity:0;
  transform:scale(.4);
  box-shadow:0 0 12px 2px rgba(143,216,255,.85);
  transition:opacity .3s,transform .3s var(--ease);
}
.nav__links a:hover{color:var(--ink)}
.nav__links a.is-active{color:#eaf4ff}
.nav__links a.is-active::after{opacity:1;transform:scale(1)}

.nav__toggle{
  display:none;
  width:42px;height:42px;
  border-radius:12px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
  padding:0 11px;
}
.nav__toggle span{
  display:block;
  height:1.5px;
  background:var(--ink);
  border-radius:2px;
  transition:transform .3s var(--ease),opacity .2s;
}
.nav__toggle span + span{margin-top:6px}
.nav__toggle[aria-expanded="true"] span:first-child{transform:translateY(3.75px) rotate(45deg)}
.nav__toggle[aria-expanded="true"] span:last-child{transform:translateY(-3.75px) rotate(-45deg)}

.nav__mobile{
  display:flex;
  flex-direction:column;
  padding:8px 28px 22px;
  background:rgba(5,7,16,.96);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid var(--line);
}
.nav__mobile[hidden]{display:none}
.nav__mobile a{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  padding:13px 0;
  font-size:17px;
  color:var(--ink);
  border-bottom:1px solid rgba(150,180,255,.07);
}
.nav__mobile a span{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.28em;
  color:var(--ink-3);
}

/* --------------------------------------------- 06 首屏与长曝光星轨 --- */
.hero{
  position:relative;
  min-height:100vh;
  min-height:100svh;
  display:flex;
  isolation:isolate;
  overflow:hidden;
}

.sky{
  position:absolute;
  inset:0;
  z-index:0;
  background:
    radial-gradient(120% 90% at 78% 22%, rgba(23,32,74,.85), transparent 60%),
    radial-gradient(90% 70% at 12% 82%, rgba(46,26,80,.55), transparent 65%),
    linear-gradient(180deg,#05070f 0%,#04050c 100%);
}
.sky__nebula{
  position:absolute;
  inset:-12%;
  filter:blur(46px);
  opacity:.6;
  background:
    radial-gradient(28% 22% at 22% 30%, rgba(123,88,255,.42), transparent 70%),
    radial-gradient(24% 20% at 84% 64%, rgba(255,120,190,.22), transparent 70%),
    radial-gradient(30% 24% at 62% 12%, rgba(70,140,255,.3), transparent 70%);
  animation:nebula-drift 90s ease-in-out infinite alternate;
}
@keyframes nebula-drift{
  from{transform:translate3d(-1.5%,-1%,0) scale(1.02)}
  to{transform:translate3d(2%,1.5%,0) scale(1.08)}
}

/* 两层画布：星轨层由 JS 推进转角后重绘（低频），闪烁/流星层每帧重绘。
   注意：不要用 CSS 把整块画布旋转 —— 矩形转过一定角度就会露出空白缺口。 */
.sky__rotor{
  position:absolute;
  inset:0;
}
.sky__canvas{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  pointer-events:none;
}

.sky__veil{
  position:absolute;
  inset:0;
  pointer-events:none;
  background:
    radial-gradient(120% 90% at 8% 96%, rgba(4,5,12,.94), rgba(4,5,12,.62) 34%, rgba(4,5,12,0) 72%),
    linear-gradient(180deg, rgba(4,5,12,.72) 0%, rgba(4,5,12,.12) 26%, rgba(4,5,12,.55) 78%, rgba(4,5,12,.9) 100%);
}
.sky__grain{
  position:absolute;
  inset:0;
  pointer-events:none;
  opacity:.1;
  mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E");
}

.hero__inner{
  position:relative;
  z-index:2;
  display:flex;
  flex-direction:column;
  justify-content:space-between;
  min-height:100vh;
  min-height:100svh;
  padding-top:calc(var(--nav-h) + 30px);
  padding-bottom:78px;
}

.hero__top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
}
.hero__kicker{
  display:flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.26em;
  text-transform:uppercase;
  color:var(--ink-3);
}
.hero__kicker .dot{
  width:6px;height:6px;
  border-radius:50%;
  background:#dbe9ff;
  box-shadow:0 0 12px 3px rgba(143,216,255,.85);
  animation:pulse 3.4s ease-in-out infinite;
}
@keyframes pulse{
  0%,100%{opacity:1;transform:scale(1)}
  50%{opacity:.45;transform:scale(.8)}
}
.hero__hud{
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.16em;
  color:var(--ink-3);
}
.clock{color:var(--cyan);text-shadow:0 0 14px rgba(143,216,255,.6)}

.hero__bottom{max-width:none}
.hero__title,
.hero__lead,
.hero__desc{max-width:760px}

.hero__title{
  display:flex;
  flex-direction:column;
  gap:6px;
  margin-bottom:22px;
}
.hero__name{
  font-family:var(--font-display);
  font-weight:600;
  font-size:clamp(58px,11vw,132px);
  line-height:1;
  letter-spacing:.1em;
  color:#f7fbff;
  text-shadow:
    0 0 26px rgba(160,200,255,.55),
    0 0 90px rgba(120,150,255,.45),
    0 0 160px rgba(120,120,255,.3);
}
.hero__latin{
  font-family:var(--font-mono);
  font-size:clamp(10px,1.4vw,13px);
  letter-spacing:.55em;
  color:var(--ink-3);
  padding-left:.3em;
}

.hero__lead{
  font-size:clamp(17px,2.2vw,22px);
  line-height:1.7;
  color:#dfe9fb;
  letter-spacing:.02em;
}
.hero__desc{
  margin-top:14px;
  max-width:560px;
  color:var(--ink-2);
  font-size:15px;
  line-height:1.9;
}

.hero__row{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:28px;
  flex-wrap:wrap;
  width:100%;
  margin-top:34px;
}
.hero__cta{display:flex;gap:14px;flex-wrap:wrap}

/* 长曝光控制器 */
.expo{
  display:flex;
  align-items:center;
  gap:12px;
  padding:9px 10px 9px 16px;
  border:1px solid var(--line);
  border-radius:99px;
  background:rgba(8,12,26,.5);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
}
.expo__label{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.2em;
  color:var(--ink-3);
}
.expo__pills{display:flex;gap:4px}
.expo__pill{
  padding:6px 13px;
  border-radius:99px;
  font-size:12.5px;
  color:var(--ink-2);
  font-family:var(--font-mono);
  letter-spacing:.04em;
  border:1px solid transparent;
  transition:color .25s,background .25s,border-color .25s,box-shadow .25s;
}
.expo__pill:hover{color:var(--ink);background:rgba(143,216,255,.08)}
.expo__pill.is-on{
  color:#eaf4ff;
  background:rgba(143,216,255,.14);
  border-color:rgba(143,216,255,.42);
  box-shadow:0 0 18px -4px rgba(143,216,255,.7);
}

.hero__scroll{
  position:absolute;
  left:50%;
  bottom:24px;
  z-index:3;
  transform:translateX(-50%);
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.3em;
  color:var(--ink-3);
  transition:color .3s;
}
.hero__scroll:hover{color:var(--cyan)}
.hero__scroll-line{
  width:1px;height:42px;
  background:linear-gradient(180deg,transparent,var(--cyan));
  opacity:.7;
}
.hero__scroll-line::after{
  content:"";
  display:block;
  width:3px;height:3px;
  margin:0 auto 0 -1px;
  border-radius:50%;
  background:#fff;
  box-shadow:0 0 10px 2px rgba(143,216,255,.9);
  animation:fall 2.6s ease-in-out infinite;
}
@keyframes fall{
  0%{transform:translateY(-42px);opacity:0}
  35%{opacity:1}
  100%{transform:translateY(0);opacity:0}
}

/* ------------------------------------------------------------ 07 关于我 --- */
.about{
  display:grid;
  grid-template-columns:minmax(0,1fr) 366px;
  gap:clamp(30px,4.5vw,62px);
  align-items:start;
}

.about__body p{
  color:var(--ink-2);
  font-size:15.5px;
  line-height:2;
}
.about__body p + p{margin-top:16px}
.about__body p:first-child{color:#d8e4fb}

.about__side{
  display:flex;
  flex-direction:column;
  gap:20px;
}
.side__label{
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--ink-3);
}
.about__side .tags{margin-top:0}
.about__side .obs{grid-template-columns:1fr;gap:12px}

.obs{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:14px;
}
.obs__card{
  display:flex;
  flex-direction:column;
  gap:6px;
  padding:18px 18px 20px;
  border:1px solid var(--line);
  border-radius:var(--r);
  background:linear-gradient(180deg,rgba(255,255,255,.045),rgba(255,255,255,.012));
  transition:border-color .35s,transform .35s var(--ease),box-shadow .35s;
}
.obs__card:hover{
  transform:translateY(-4px);
  border-color:rgba(143,216,255,.36);
  box-shadow:0 22px 48px -30px rgba(143,216,255,.9);
}
.obs__k{
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.24em;
  color:var(--ink-3);
  text-transform:uppercase;
}
.obs__v{
  font-size:17px;
  color:#eef4ff;
  letter-spacing:.04em;
}
.obs__s{font-size:12.5px;color:var(--ink-3)}

/* ------------------------------------------------------------ 08 作品 --- */
.filters{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:9px;
  margin-bottom:30px;
}
.filters__btn{
  padding:8px 18px;
  border-radius:99px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.028);
  color:var(--ink-2);
  font-size:13.5px;
  letter-spacing:.04em;
  transition:color .28s,border-color .28s,background .28s,box-shadow .28s;
}
.filters__btn:hover{color:var(--ink);border-color:var(--line-2)}
.filters__btn.is-on{
  color:#eaf4ff;
  border-color:rgba(143,216,255,.45);
  background:rgba(143,216,255,.12);
  box-shadow:0 0 22px -8px rgba(143,216,255,.9);
}
.filters__note{
  margin-left:auto;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--ink-3);
  padding:6px 12px;
  border:1px dashed rgba(150,180,255,.22);
  border-radius:99px;
}

.works{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(300px,1fr));
  gap:26px;
}

.work{
  position:relative;
  display:flex;
  flex-direction:column;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.012));
  overflow:hidden;
  --mx:50%;
  --my:50%;
  transition:transform .4s var(--ease),border-color .4s,box-shadow .4s,opacity .35s;
}
/* 跟随鼠标的柔光（位置由 JS 写入 --mx/--my） */
.work::after,
.cc__item::after{
  content:"";
  position:absolute;
  inset:0;
  z-index:3;
  pointer-events:none;
  border-radius:inherit;
  opacity:0;
  transition:opacity .35s var(--ease);
  background:radial-gradient(300px circle at var(--mx) var(--my),
    rgba(143,216,255,.16), rgba(143,216,255,.05) 42%, transparent 72%);
}
.work:hover{
  transform:translateY(-6px);
  border-color:rgba(143,216,255,.4);
  box-shadow:
    0 30px 70px -34px rgba(70,120,255,.9),
    inset 0 1px 0 rgba(255,255,255,.07);
}

/* 悬停时：当前这张浮起来、亮起来，同组的其它卡片安静退到后面 */
.work.is-hot,
.cc__item.is-hot{
  transform:translateY(-9px) scale(1.016);
  border-color:rgba(143,216,255,.6);
  box-shadow:
    0 40px 90px -36px rgba(90,150,255,1),
    0 0 70px -24px rgba(143,216,255,.55),
    inset 0 1px 0 rgba(255,255,255,.1);
  z-index:4;
}
.work.is-hot::after,
.cc__item.is-hot::after{opacity:1}
.work.is-hot .work__title,
.cc__item.is-hot .cc__txt i{color:#fff}
.work.is-hot .work__link{border-bottom-color:rgba(143,216,255,.55)}
.work.is-hot .shot{box-shadow:0 26px 60px -30px #000, 0 0 0 1px rgba(143,216,255,.18)}

.work.is-dim,
.cc__item.is-dim{
  opacity:.34;
  transform:scale(.986);
  filter:saturate(.55);
}
.work.is-hide{
  display:none;
}

/* 迷你站点预览（全部由 CSS 渐变拼成，无需额外图片） */
.shot{
  position:relative;
  margin:12px 12px 0;
  border:1px solid rgba(150,180,255,.14);
  border-radius:12px;
  overflow:hidden;
  background:#060a16;
  box-shadow:0 18px 40px -26px #000;
}
.shot__bar{
  display:flex;
  align-items:center;
  gap:5px;
  height:26px;
  padding:0 10px;
  background:rgba(255,255,255,.05);
  border-bottom:1px solid rgba(150,180,255,.1);
}
.shot__bar i{
  width:7px;height:7px;
  border-radius:50%;
  background:rgba(226,238,255,.22);
}
.shot__bar i:first-child{background:rgba(255,143,199,.5)}
.shot__bar i:nth-child(2){background:rgba(255,215,154,.45)}
.shot__bar i:nth-child(3){background:rgba(143,216,255,.5)}
.shot__bar b{
  margin-left:8px;
  font-family:var(--font-mono);
  font-size:10.5px;
  font-weight:400;
  letter-spacing:.05em;
  color:var(--ink-3);
}

.shot__view{
  --bar-strong:rgba(232,242,255,.78);
  --bar:rgba(214,230,255,.34);
  --bar-dim:rgba(214,230,255,.2);
  --acc:hsl(var(--h) 95% 72% / .42);
  --acc-2:hsl(var(--h) 95% 66% / .22);
  position:relative;
  height:158px;
  background-color:hsl(var(--h) 52% 7%);
  background-repeat:no-repeat;
  overflow:hidden;
}
.shot__view::before{
  content:"";
  position:absolute;
  inset:0;
  background:
    radial-gradient(90% 76% at 84% 0%, hsl(var(--h) 92% 62% / .38), transparent 68%),
    linear-gradient(180deg, hsl(var(--h) 70% 24% / .32), transparent 62%);
}
.shot__view::after{
  content:"";
  position:absolute;
  inset:0;
  opacity:.75;
  background-image:
    radial-gradient(1.3px 1.3px at 16% 20%, rgba(255,255,255,.85), transparent),
    radial-gradient(1px 1px at 68% 34%, rgba(255,255,255,.6), transparent),
    radial-gradient(1px 1px at 40% 78%, rgba(255,255,255,.5), transparent),
    radial-gradient(1.4px 1.4px at 88% 66%, rgba(255,255,255,.6), transparent),
    radial-gradient(1px 1px at 24% 58%, rgba(200,225,255,.5), transparent);
}

/* 博客：标题 + 正文行 + 侧栏 */
.shot--blog .shot__view{
  background-image:
    linear-gradient(var(--bar-strong),var(--bar-strong)),
    linear-gradient(var(--bar),var(--bar)),
    linear-gradient(var(--bar),var(--bar)),
    linear-gradient(var(--bar-dim),var(--bar-dim)),
    linear-gradient(var(--acc),var(--acc)),
    linear-gradient(var(--acc-2),var(--acc-2));
  background-size:42% 10px,58% 5px,52% 5px,34% 5px,22% 56%,8% 30%;
  background-position:7% 26px,7% 52px,7% 68px,7% 84px,97% 30px,4% 104px;
}

/* 工具集：一条搜索框 + 两排小圆按钮 */
.shot--tools .shot__view{
  background-image:
    linear-gradient(var(--bar),var(--bar)),
    radial-gradient(circle at 50% 50%, var(--acc) 0 60%, transparent 62%),
    radial-gradient(circle at 50% 50%, var(--acc) 0 60%, transparent 62%),
    radial-gradient(circle at 50% 50%, var(--acc) 0 60%, transparent 62%),
    radial-gradient(circle at 50% 50%, var(--acc-2) 0 60%, transparent 62%),
    radial-gradient(circle at 50% 50%, var(--acc-2) 0 60%, transparent 62%),
    radial-gradient(circle at 50% 50%, var(--acc-2) 0 60%, transparent 62%);
  background-size:64% 12px,38px 38px,38px 38px,38px 38px,38px 38px,38px 38px,38px 38px;
  background-position:7% 16px,20% 66px,50% 66px,80% 66px,20% 122px,50% 122px,80% 122px;
}

/* 专注钟：一个大圆环 + 一行小字 */
.shot--focus .shot__view{
  background-image:
    radial-gradient(circle at 50% 50%,
      transparent 0 46%, var(--acc) 46% 53%, transparent 53%),
    radial-gradient(circle at 50% 50%, var(--bar-strong) 0 6px, transparent 7px),
    linear-gradient(var(--bar),var(--bar)),
    linear-gradient(var(--bar-dim),var(--bar-dim));
  background-size:132px 132px,14px 14px,40% 6px,26% 6px;
  background-position:50% 40px,50% 42px,50% 132px,50% 112px;
}

/* 相册：瀑布流色块 */
.shot--photos .shot__view{
  background-image:
    linear-gradient(var(--acc),var(--acc)),
    linear-gradient(var(--acc-2),var(--acc-2)),
    linear-gradient(var(--acc-2),var(--acc-2)),
    linear-gradient(var(--acc),var(--acc)),
    linear-gradient(var(--bar-dim),var(--bar-dim)),
    linear-gradient(var(--acc-2),var(--acc-2));
  background-size:26% 48%,30% 66%,26% 40%,30% 52%,16% 30%,26% 34%;
  background-position:6% 12px,40% 12px,74% 12px,40% 84px,6% 118px,74% 118px;
}

/* 实验室：均衡器条 */
.shot--lab .shot__view{
  background-image:
    linear-gradient(var(--acc),var(--acc)),
    linear-gradient(var(--acc-2),var(--acc-2)),
    linear-gradient(var(--acc),var(--acc)),
    linear-gradient(var(--acc-2),var(--acc-2)),
    linear-gradient(var(--acc),var(--acc)),
    linear-gradient(var(--acc-2),var(--acc-2)),
    linear-gradient(var(--bar),var(--bar));
  background-size:5.4% 62%,5.4% 40%,5.4% 78%,5.4% 30%,5.4% 56%,5.4% 34%,62% 6px;
  background-position:12% 100%,26% 100%,40% 100%,54% 100%,68% 100%,82% 100%,6% 22px;
}

/* 短链：输入框 + 二维码方块 */
.shot--short .shot__view{
  background-image:
    linear-gradient(var(--acc),var(--acc)),
    linear-gradient(var(--acc-2),var(--acc-2)),
    linear-gradient(var(--bar),var(--bar)),
    linear-gradient(var(--bar-dim),var(--bar-dim)),
    linear-gradient(var(--bar-dim),var(--bar-dim));
  background-size:52% 26px,30% 26px,66% 6px,44% 6px,32% 6px;
  background-position:7% 20px,88% 20px,7% 76px,7% 98px,7% 118px;
}

.work__body{
  display:flex;
  flex-direction:column;
  gap:9px;
  padding:20px 22px 24px;
  flex:1;
}
.work__meta{
  display:flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--ink-3);
}
.work__tag{
  padding:3px 10px;
  border-radius:99px;
  border:1px solid rgba(143,216,255,.34);
  background:rgba(143,216,255,.1);
  color:#cfe8ff;
  font-size:10.5px;
  letter-spacing:.12em;
}
.work__tag--tool{
  border-color:rgba(155,140,255,.38);
  background:rgba(155,140,255,.12);
  color:#ddd6ff;
}
.work__tag--lab{
  border-color:rgba(255,143,199,.34);
  background:rgba(255,143,199,.1);
  color:#ffd7ea;
}
.work__title{
  font-family:var(--font-display);
  font-size:21px;
  font-weight:600;
  letter-spacing:.04em;
  color:#f4f8ff;
}
.work__desc{
  color:var(--ink-2);
  font-size:14px;
  line-height:1.85;
}
.work__link{
  margin-top:auto;
  padding-top:12px;
  display:inline-flex;
  align-items:center;
  gap:7px;
  align-self:flex-start;
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.04em;
  color:var(--cyan);
  border-bottom:1px solid transparent;
  transition:border-color .3s,color .3s;
}
.work__link span{transition:transform .3s var(--ease)}
.work__link:hover{border-bottom-color:rgba(143,216,255,.5)}
.work__link:hover span{transform:translate(2px,-2px)}

/* ---------------------------------------------------------- 09 联系方式 --- */
.sec--contact{padding-bottom:clamp(80px,10vw,130px)}

.cc{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(400px,1fr));
  gap:16px;
}
.cc__item{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:15px 15px 15px 17px;
  border:1px solid var(--line);
  border-radius:var(--r);
  background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.014));
  overflow:hidden;
  --mx:50%;
  --my:50%;
  transition:transform .35s var(--ease),border-color .35s,box-shadow .35s,opacity .35s;
}
.cc__item:hover{
  transform:translateY(-4px);
  border-color:rgba(143,216,255,.38);
  box-shadow:0 26px 54px -32px rgba(143,216,255,.95);
}
.cc__main{
  display:flex;
  align-items:center;
  gap:13px;
  min-width:0;
  flex:1;
}
.cc__ico{
  flex:none;
  display:grid;
  place-items:center;
  width:40px;height:40px;
  border-radius:12px;
  border:1px solid var(--line);
  background:radial-gradient(circle at 50% 20%,rgba(143,216,255,.18),rgba(155,140,255,.06));
  color:var(--cyan);
}
.cc__ico svg{width:19px;height:19px}
.cc__txt{display:flex;flex-direction:column;min-width:0;gap:2px}
.cc__txt b{
  font-size:12.5px;
  font-weight:500;
  letter-spacing:.1em;
  color:var(--ink-3);
}
.cc__txt i{
  font-style:normal;
  font-family:var(--font-mono);
  font-size:13.5px;
  color:#eaf2ff;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}
.cc__copy{
  flex:none;
  padding:7px 13px;
  border-radius:99px;
  border:1px solid var(--line);
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.08em;
  color:var(--ink-2);
  transition:color .25s,border-color .25s,background .25s;
}
.cc__copy:hover{
  color:#eaf4ff;
  border-color:rgba(143,216,255,.5);
  background:rgba(143,216,255,.1);
}
.cc__copy.is-done{
  color:#c9ffe4;
  border-color:rgba(120,255,190,.5);
  background:rgba(120,255,190,.1);
}

/* ------------------------------------------------------ 10 页脚与提示条 --- */
.foot{
  border-top:1px solid rgba(150,180,255,.1);
  background:linear-gradient(180deg,transparent,rgba(11,16,36,.6));
}
.foot__in{
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:16px;
  padding-top:28px;
  padding-bottom:28px;
}
.foot__brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:14px;
  letter-spacing:.06em;
  color:var(--ink-2);
}
.foot__brand .brand__mark{color:var(--cyan)}
.foot__mono{
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.12em;
  color:var(--ink-3);
}
.foot__mono a{color:var(--ink-2);border-bottom:1px solid var(--line-2)}
.foot__mono a:hover{color:var(--cyan)}
.foot__top{
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.12em;
  color:var(--ink-3);
  transition:color .3s;
}
.foot__top:hover{color:var(--cyan)}

.toast{
  position:fixed;
  left:50%;
  bottom:34px;
  z-index:80;
  padding:11px 22px;
  border-radius:99px;
  border:1px solid rgba(143,216,255,.36);
  background:rgba(8,12,26,.92);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  color:#eaf4ff;
  font-size:13.5px;
  letter-spacing:.04em;
  box-shadow:0 22px 50px -22px rgba(0,0,0,.95),0 0 30px -10px rgba(143,216,255,.6);
  opacity:0;
  transform:translate(-50%,14px);
  pointer-events:none;
  transition:opacity .32s var(--ease),transform .32s var(--ease);
}
.toast.is-on{opacity:1;transform:translate(-50%,0)}

/* ------------------------------------------------------------ 11 入场 --- */
.reveal{
  opacity:0;
  transform:translateY(24px);
}
.reveal.is-in{
  opacity:1;
  transform:none;
  transition:
    opacity .85s var(--ease),
    transform .85s var(--ease);
}
.hero__bottom,
.hero__top{
  animation:hero-in 1.15s var(--ease) both;
}
.hero__bottom{animation-delay:.12s}
@keyframes hero-in{
  from{opacity:0;transform:translateY(26px);filter:blur(6px)}
  to{opacity:1;transform:none;filter:blur(0)}
}

/* ---------------------------------------------------------- 12 响应式 --- */
@media (max-width:1080px){
  .nav__links{gap:24px}
}

@media (max-width:900px){
  :root{--nav-h:62px}
  .about{grid-template-columns:1fr}
  .about__side{margin-top:6px;gap:16px}
  .about__side .obs{grid-template-columns:repeat(auto-fit,minmax(170px,1fr))}
  .hero__scroll{display:none}
  .hero__inner{padding-bottom:56px}
}

@media (max-width:860px){
  .nav__links{display:none}
  .nav__toggle{display:block}
  /* 只改左右内边距：用 padding 简写会把手首屏的 padding-top 一起重置 */
  .wrap{padding-left:20px;padding-right:20px}
  .nav__mobile{padding:8px 20px 20px}
}

@media (max-width:720px){
  .hero__hud{display:none}
  .hero__row{
    flex-direction:column;
    align-items:stretch;
    gap:22px;
  }
  .hero__cta{width:100%}
  .hero__cta .btn{flex:1;justify-content:center}
  .expo{
    align-self:flex-start;
    flex-wrap:wrap;
    border-radius:18px;
    padding:12px 14px;
    gap:10px;
  }
  .hero__name{letter-spacing:.06em}
  .hero__latin{letter-spacing:.34em}
  .filters__note{margin-left:0;width:100%;text-align:center}
  .works{grid-template-columns:1fr}
  .cc{grid-template-columns:1fr}
  .foot__in{flex-direction:column;align-items:flex-start;gap:12px}
}

@media (max-width:520px){
  .sec__title{font-size:clamp(25px,7vw,32px)}
  .expo__pill{padding:6px 10px;font-size:11.5px}
  .expo__label{width:100%}
}

/* ------------------------------------------------------ 13 降低动效偏好 --- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .sky__nebula{animation:none !important}
  .reveal{opacity:1;transform:none}
  .hero__bottom,.hero__top{animation:none}
  .sky.is-static{
    background-image:
      linear-gradient(180deg,rgba(4,5,12,.55),rgba(4,5,12,.82)),
      url("../img/sky.jpg");
    background-size:cover,cover;
    background-position:center,center;
  }
  .sky.is-static .sky__rotor{display:none}
}