/* ============================================================
   STEVEN SUN © 2026 — 流光 LIQUID LIGHT
   在简约中埋藏深度，平面中升华维度。
   ============================================================ */

:root {
  --bg:    #060608;
  --ink:   #ecedef;
  --dim:   rgba(236, 237, 239, .48);
  --faint: rgba(236, 237, 239, .26);
  --hair:  rgba(236, 237, 239, .13);
  --acc:   #a78bfa;
  --acc2:  #67e8f9;

  --font-display: "Syne", "Avenir Next", system-ui, sans-serif;
  --font-mono:    "Space Mono", "Courier New", monospace;
  --font-serif:   "Noto Serif SC", "Songti SC", "SimSun", serif;

  --ease-out: cubic-bezier(.16, 1, .3, 1);   /* expo-out：先疾后缓，非线性之骨 */
  --pad: clamp(20px, 4vw, 64px);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

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

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.5;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

html.js body.is-loading { overflow: hidden; }

::selection { background: var(--acc); color: #0a0a14; }

a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* 隐藏原生光标（仅精确指针 + JS 启用时） */
body.has-cursor, body.has-cursor a, body.has-cursor button { cursor: none; }

/* 细滚动条 */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: rgba(236,237,239,.22); }

/* ------------------------------------------------------------
   背景层：流体 / 颗粒
   ------------------------------------------------------------ */
#fluid {
  position: fixed; inset: 0;
  width: 100%; height: 100%;
  z-index: -2;
  background: var(--bg);
}

.grain {
  position: fixed; inset: -25%; /* 1.5× 视口即可覆盖位移；更大只是浪费显存带宽 */
  z-index: 80;
  pointer-events: none;
  opacity: .065;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='256' height='256'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix type='saturate' values='0'/></filter><rect width='256' height='256' filter='url(%23n)' opacity='0.6'/></svg>");
  animation: grain 7s steps(10) infinite;
}
@keyframes grain {
  0%{transform:translate(0,0)} 10%{transform:translate(-5%,-8%)} 20%{transform:translate(-12%,3%)}
  30%{transform:translate(6%,-10%)} 40%{transform:translate(-4%,12%)} 50%{transform:translate(-10%,4%)}
  60%{transform:translate(12%,0)} 70%{transform:translate(0,10%)} 80%{transform:translate(-12%,-4%)}
  90%{transform:translate(8%,6%)} 100%{transform:translate(0,0)}
}

/* ------------------------------------------------------------
   加载器
   ------------------------------------------------------------ */
.loader {
  position: fixed; inset: 0;
  z-index: 200;
  display: none;
  align-items: flex-end;
  justify-content: space-between;
  padding: var(--pad);
  background: var(--bg);
  transition: clip-path 1.1s var(--ease-out);
  clip-path: inset(0 0 0 0);
}
html.js .loader { display: flex; }
.loader.done { clip-path: inset(0 0 100% 0); pointer-events: none; }
.loader__inner {
  display: flex; width: 100%;
  align-items: flex-end; justify-content: space-between;
}
.loader__count {
  font-family: var(--font-mono);
  font-size: clamp(4rem, 14vw, 11rem);
  font-weight: 700;
  line-height: .85;
  letter-spacing: -.04em;
  color: var(--ink);
}
.loader__hint {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .3em;
  text-transform: uppercase;
  color: var(--dim);
  padding-bottom: .8em;
}

/* ------------------------------------------------------------
   自定义光标
   ------------------------------------------------------------ */
.cursor-dot, .cursor-ring {
  position: fixed; top: 0; left: 0;
  z-index: 300;
  pointer-events: none;
  border-radius: 50%;
  opacity: 0;
}
body.has-cursor .cursor-dot, body.has-cursor .cursor-ring { opacity: 1; }
.cursor-dot {
  width: 5px; height: 5px;
  margin: -2.5px 0 0 -2.5px;
  background: var(--ink);
  mix-blend-mode: difference;
}
.cursor-ring {
  width: 36px; height: 36px;
  margin: -18px 0 0 -18px;
  border: 1px solid rgba(236,237,239,.8);
  mix-blend-mode: difference;
  display: flex; align-items: center; justify-content: center;
  transition: width .3s var(--ease-out), height .3s var(--ease-out),
              margin .3s var(--ease-out), background-color .3s var(--ease-out),
              border-color .3s var(--ease-out);
}
.cursor-ring__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  opacity: 0;
  transition: opacity .3s;
}
.cursor-ring.is-active {
  width: 64px; height: 64px;
  margin: -32px 0 0 -32px;
  background: rgba(236,237,239,.08);
}
.cursor-ring.is-view {
  width: 88px; height: 88px;
  margin: -44px 0 0 -44px;
  background: var(--ink);
  border-color: var(--ink);
  mix-blend-mode: normal;
}
.cursor-ring.is-view .cursor-ring__label { opacity: 1; color: #08080c; }

/* ------------------------------------------------------------
   导航
   ------------------------------------------------------------ */
.nav {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: clamp(16px, 2.4vw, 28px) var(--pad);
  mix-blend-mode: difference;
  transition: transform .7s var(--ease-out), opacity .7s var(--ease-out);
}
.nav.is-hidden { transform: translateY(-110%); }
html.js body.is-loading .nav { opacity: 0; transform: translateY(-18px); }

.nav__logo {
  font-weight: 800;
  font-size: 19px;
  letter-spacing: -.02em;
}
.nav__logo sup {
  font-family: var(--font-mono);
  font-size: 9px; font-weight: 400;
  letter-spacing: .08em;
  margin-left: 2px;
  color: var(--dim);
}
.nav__links { display: flex; gap: clamp(18px, 3vw, 44px); }
.nav__links a {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .3em;
  color: var(--dim);
  transition: color .4s;
}
.nav__links a:hover { color: var(--ink); }
.nav__clock {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--dim);
  font-variant-numeric: tabular-nums;
}
.nav__clock i {
  font-style: normal; font-size: 9px;
  letter-spacing: .3em; margin-left: 8px;
  color: var(--faint);
}

/* ------------------------------------------------------------
   文本切割 / 入场（非线性 stagger 由 JS 注入 delay）
   ------------------------------------------------------------ */
.line { display: block; overflow: hidden; }
html.js .ch {
  display: inline-block;
  transform: translateY(115%) rotate(5deg);
  transform-origin: 0 100%;
  transition: transform 1.15s var(--ease-out);
  will-change: transform;
}
html.js .in .ch { transform: translateY(0) rotate(0); }

html.js [data-reveal] {
  opacity: 0;
  transform: translateY(34px);
  transition: opacity 1s var(--ease-out), transform 1.1s var(--ease-out);
}
html.js [data-reveal].in { opacity: 1; transform: none; }

[data-skew] { will-change: transform; }

/* ------------------------------------------------------------
   ① HERO
   ------------------------------------------------------------ */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 0 var(--pad) clamp(28px, 5vh, 56px);
}
.hero__eyebrow {
  display: flex; justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .32em;
  color: var(--dim);
  margin-bottom: clamp(8px, 2vh, 22px);
  text-transform: uppercase;
}
.hero__title {
  font-weight: 800;
  font-size: clamp(3.2rem, 13vw, 16rem);
  line-height: .88;
  letter-spacing: -.045em;
  text-transform: uppercase;
  white-space: nowrap;
}
.line--shift { text-align: right; }
.hero__word--outline {
  color: transparent;
  -webkit-text-stroke: clamp(1px, .18vw, 2.5px) var(--ink);
}
.hero__row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-top: clamp(28px, 6vh, 64px);
}
.hero__bio {
  font-family: var(--font-serif);
  font-size: clamp(14px, 1.25vw, 17px);
  line-height: 2;
  color: var(--dim);
}
.hero__status {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  line-height: 2.1;
  color: var(--faint);
  text-transform: uppercase;
}
.pulse {
  display: inline-block;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--acc2);
  margin-right: 10px;
  animation: pulse 2.2s infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(103,232,249,.45); }
  55%      { box-shadow: 0 0 0 9px rgba(103,232,249,0); }
}

/* 旋转环形文字 */
.orbit {
  position: relative;
  width: clamp(92px, 9vw, 128px);
  height: clamp(92px, 9vw, 128px);
  flex: none;
  display: block;
}
.orbit svg {
  width: 100%; height: 100%;
  overflow: visible;
  animation: spin 16s linear infinite;
}
.orbit text {
  font-family: var(--font-mono);
  font-size: 8.6px;
  letter-spacing: .42em;
  fill: var(--dim);
}
.orbit__arrow {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
  color: var(--ink);
  animation: drift-y 2.4s var(--ease-out) infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes drift-y {
  0%, 100% { transform: translateY(-3px); opacity: .9; }
  50%      { transform: translateY(4px);  opacity: .4; }
}

.hero__vert {
  position: absolute;
  top: 50%; right: calc(var(--pad) * .45);
  transform: translateY(-72%);
  writing-mode: vertical-rl;
  font-family: var(--font-serif);
  font-size: 13px;
  letter-spacing: .55em;
  color: var(--faint);
}

/* ------------------------------------------------------------
   小标 kick
   ------------------------------------------------------------ */
.kick {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .34em;
  text-transform: uppercase;
  color: var(--dim);
  display: flex; align-items: center; gap: 14px;
}
.kick::before {
  content: "";
  width: 30px; height: 1px;
  background: var(--faint);
}
.kick span { color: var(--acc); }

/* ------------------------------------------------------------
   ② 自述 — 逐字点亮
   ------------------------------------------------------------ */
.manifesto {
  min-height: 92vh;
  display: flex; flex-direction: column; justify-content: center;
  gap: clamp(28px, 5vh, 52px);
  padding: 16vh var(--pad);
  max-width: 1280px;
}
.manifesto__text {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(1.6rem, 4.4vw, 3.6rem);
  line-height: 1.78;
  letter-spacing: .04em;
}
.manifesto__text .ig { transition: opacity .12s linear, color .3s; }
.manifesto__sub {
  font-family: var(--font-mono);
  font-size: clamp(11px, 1.05vw, 13px);
  letter-spacing: .22em;
  line-height: 2.2;
  color: var(--faint);
  text-transform: uppercase;
}

/* ------------------------------------------------------------
   ③ 四重身份 — 横向长卷（scroll-jacked 维度转换）
   ------------------------------------------------------------ */
.identities { height: 250vh; position: relative; }
.identities__sticky {
  position: sticky; top: 0;
  height: 100vh;
  overflow: hidden;
}
.identities__track {
  display: flex;
  align-items: stretch;
  height: 100%;
  padding-left: 10vw;
  will-change: transform;
}
.panel {
  position: relative;
  flex: none;
  width: min(62vw, 860px);
  height: 100%;
  display: flex; flex-direction: column; justify-content: center;
  padding-right: 8vw;
}
.panel__ghost {
  position: absolute;
  top: 50%; left: -4vw;
  transform: translateY(-50%);
  font-weight: 800;
  font-size: clamp(6rem, 17vw, 17rem);
  letter-spacing: -.02em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(236,237,239,.07);
  pointer-events: none;
  user-select: none;
  white-space: nowrap;
  will-change: transform;
}
.panel__no {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .34em;
  color: var(--acc);
  margin-bottom: 2.4em;
}
.panel__zh {
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(2.8rem, 8.5vw, 7.6rem);
  line-height: 1.12;
  letter-spacing: .02em;
}
.panel__en {
  font-weight: 700;
  font-size: clamp(.9rem, 1.6vw, 1.25rem);
  letter-spacing: .55em;
  color: var(--dim);
  margin-top: 1.6em;
  text-transform: uppercase;
}
.panel__line {
  font-family: var(--font-serif);
  font-size: clamp(1rem, 1.6vw, 1.3rem);
  color: var(--dim);
  margin-top: 3.2em;
  max-width: 26em;
  line-height: 2;
}
.identities__progress {
  position: absolute;
  left: 10vw; bottom: 7vh;
  width: 28vw; height: 1px;
  background: var(--hair);
}
.identities__progress span {
  display: block;
  height: 100%;
  background: var(--ink);
  transform: scaleX(0);
  transform-origin: 0 50%;
  will-change: transform;
}

/* ------------------------------------------------------------
   ④ 精选作品 — 编辑式列表 + 悬浮画窗
   ------------------------------------------------------------ */
.works {
  position: relative;
  padding: 18vh var(--pad) 14vh;
}
.works__head {
  position: relative;
  margin: clamp(20px, 4vh, 44px) 0 clamp(36px, 7vh, 72px);
}
.works__title {
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(3.4rem, 10vw, 9rem);
  line-height: 1;
  position: relative;
  z-index: 1;
}
.works__ghost {
  position: absolute;
  right: 0; bottom: -.12em;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(4.4rem, 15vw, 14rem);
  line-height: 1;
  letter-spacing: -.02em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(236,237,239,.13);
  pointer-events: none;
  user-select: none;
}

.works__list { border-bottom: 1px solid var(--hair); }
.work-row {
  position: relative;
  display: grid;
  grid-template-columns: 3.4em 1fr auto 5em 2em;
  align-items: baseline;
  gap: clamp(12px, 2.4vw, 40px);
  padding: clamp(22px, 3.6vh, 38px) 0;
  border-top: 1px solid var(--hair);
  transition: padding .55s var(--ease-out);
}
.work-row__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--faint);
}
.work-row__title {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(1.5rem, 3.4vw, 2.9rem);
  line-height: 1.2;
  transition: transform .55s var(--ease-out), color .4s;
}
.work-row__cat {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--dim);
  text-transform: uppercase;
}
.work-row__year {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--dim);
  text-align: right;
  font-variant-numeric: tabular-nums;
}
.work-row__arrow {
  font-size: 18px;
  color: var(--faint);
  transition: transform .55s var(--ease-out), color .4s;
}
@media (hover: hover) {
  .work-row:hover .work-row__title { transform: translateX(18px); color: var(--acc2); }
  .work-row:hover .work-row__arrow { transform: translate(4px, -4px) rotate(45deg); color: var(--ink); }
}

/* 悬浮画窗 — 跟随光标的生成式画面 */
.work-preview {
  position: fixed;
  top: 0; left: 0;
  z-index: 90;
  width: clamp(260px, 24vw, 380px);
  aspect-ratio: 4 / 3;
  pointer-events: none;
  overflow: hidden;
  opacity: 0;
  transform: scale(.82);
  transition: opacity .45s var(--ease-out), transform .45s var(--ease-out);
  will-change: transform;
}
.work-preview.on { opacity: 1; }
.work-preview__art {
  position: absolute; inset: -12%;
  transition: background 0.01s;
}
.work-preview::after {
  content: "";
  position: absolute; inset: 0;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='180' height='180'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix type='saturate' values='0'/></filter><rect width='180' height='180' filter='url(%23n)' opacity='0.5'/></svg>");
  opacity: .22;
  mix-blend-mode: overlay;
}
.work-preview[data-art="1"] .work-preview__art { background:
  radial-gradient(120% 95% at 18% 112%, #3ef0bd 0%, transparent 52%),
  radial-gradient(130% 120% at 85% -12%, #4338ca 0%, transparent 58%),
  linear-gradient(165deg, #04060f 0%, #0a1028 100%); }
.work-preview[data-art="2"] .work-preview__art { background:
  conic-gradient(from 210deg at 60% 40%, #0a0614, #7c3aed 22%, #0a0614 45%, #e879f9 68%, #0a0614 90%),
  #0a0614; }
.work-preview[data-art="3"] .work-preview__art { background:
  radial-gradient(110% 80% at 80% 105%, #d9a06b 0%, transparent 50%),
  radial-gradient(140% 110% at 10% -10%, #0e7490 0%, transparent 62%),
  linear-gradient(150deg, #06141a 0%, #0d2b33 100%); }
.work-preview[data-art="4"] .work-preview__art { background:
  radial-gradient(100% 76% at 50% 108%, #ff7849 0%, #d6336c 38%, transparent 66%),
  linear-gradient(180deg, #11163a 0%, #2b1140 100%); }
.work-preview[data-art="5"] .work-preview__art { background:
  repeating-linear-gradient(90deg, rgba(167,139,250,.55) 0 9px, transparent 9px 26px),
  repeating-linear-gradient(0deg, rgba(103,232,249,.4) 0 7px, transparent 7px 31px),
  linear-gradient(135deg, #0b0716 0%, #190b2e 100%); }
.work-preview[data-art="6"] .work-preview__art { background:
  radial-gradient(150% 60% at 50% 118%, #c2a878 0%, #6e5a3a 28%, transparent 58%),
  radial-gradient(90% 70% at 72% 6%, #1e3a8a 0%, transparent 65%),
  linear-gradient(180deg, #040611 0%, #101a33 100%); }

/* ------------------------------------------------------------
   ⑤ 跑马灯
   ------------------------------------------------------------ */
.marquee {
  overflow: hidden;
  border-top: 1px solid var(--hair);
  border-bottom: 1px solid var(--hair);
  padding: clamp(20px, 3.4vh, 36px) 0;
  white-space: nowrap;
}
.marquee__inner {
  display: inline-flex;
  will-change: transform;
}
.marquee__inner span {
  font-weight: 700;
  font-size: clamp(2rem, 5.4vw, 4.6rem);
  letter-spacing: .02em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(236,237,239,.5);
  text-transform: uppercase;
  flex: none;
}

/* ------------------------------------------------------------
   ⑥ 联络
   ------------------------------------------------------------ */
.contact {
  min-height: 96vh;
  display: flex; flex-direction: column;
  justify-content: center; align-items: center;
  text-align: center;
  gap: clamp(22px, 4vh, 40px);
  padding: 16vh var(--pad) 10vh;
}
.contact .kick { justify-content: center; }
.contact .kick::after {
  content: "";
  width: 30px; height: 1px;
  background: var(--faint);
}
.contact__title {
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(3.2rem, 11vw, 10.5rem);
  line-height: 1.12;
  letter-spacing: .02em;
}
.contact__title .em {
  color: transparent;
  -webkit-text-stroke: clamp(1px, .14vw, 2px) var(--ink);
  transition: color 1s var(--ease-out);
}
.contact__title:hover .em { color: var(--ink); }
.contact__lead {
  font-family: var(--font-serif);
  color: var(--dim);
  font-size: clamp(.95rem, 1.5vw, 1.2rem);
  line-height: 2.1;
}
.contact__lead i {
  font-family: var(--font-mono);
  font-style: normal;
  font-size: .78em;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--faint);
}
.contact__mail {
  position: relative;
  display: inline-block;
  font-family: var(--font-mono);
  font-size: clamp(1rem, 2.6vw, 1.9rem);
  letter-spacing: .06em;
  padding: 1.1em 2em;
  border: 1px solid var(--hair);
  border-radius: 100px;
  transition: border-color .5s, background-color .5s, color .5s;
  will-change: transform;
}
.contact__mail em {
  font-style: normal;
  margin-left: .6em;
  display: inline-block;
  transition: transform .5s var(--ease-out);
}
.contact__mail:hover {
  border-color: var(--ink);
  background: var(--ink);
  color: #0a0a10;
}
.contact__mail:hover em { transform: translate(3px, -3px) rotate(45deg); }
.contact__socials {
  display: flex; gap: clamp(20px, 4vw, 48px);
  margin-top: 2vh;
}
.contact__socials a {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .3em;
  text-transform: uppercase;
  color: var(--dim);
  transition: color .4s;
}
.contact__socials a:hover { color: var(--acc2); }

/* ------------------------------------------------------------
   页脚
   ------------------------------------------------------------ */
.footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 26px var(--pad);
  border-top: 1px solid var(--hair);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--faint);
}
.footer a { transition: color .4s; }
.footer a:hover { color: var(--ink); }

/* ------------------------------------------------------------
   响应式
   ------------------------------------------------------------ */
@media (max-width: 900px) {
  .hero__vert { display: none; }
  .work-row { grid-template-columns: 2.6em 1fr 2em; }
  .work-row__cat { grid-column: 2; grid-row: 2; margin-top: .6em; }
  .work-row__year { display: none; }
  .panel { width: 80vw; }
  .identities { height: 300vh; }
  .identities__progress { width: 56vw; }
}
@media (max-width: 640px) {
  .nav__clock { display: none; }
  .hero__row { flex-wrap: wrap; }
  .orbit { order: -1; margin-left: auto; }
  .hero__eyebrow span:last-child { display: none; }
  .footer { flex-direction: column; gap: 10px; text-align: center; }
  .work-preview { display: none; }
}

/* ------------------------------------------------------------
   动效关闭态（html.motion-off，保留给未来使用）：
   一切立即可见、静止，但内容与布局完整可达
   ------------------------------------------------------------ */
html.motion-off .ch, html.motion-off [data-reveal] {
  transform: none; opacity: 1; transition: none;
}
html.motion-off .grain,
html.motion-off .orbit svg,
html.motion-off .orbit__arrow,
html.motion-off .pulse { animation: none; }
html.motion-off .loader { transition: none; }

/* 系统级偏好只保留无副作用的部分：取消平滑滚动 */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}