/* 方案 E · A 的排版 × 明亮主题 */
:root {
  --bg: #f7f5f1;
  --bg-2: #efebe4;
  --ink: #141416;
  --ink-2: #4a4a50;
  --ink-3: #7c7c84;
  --line: rgba(0, 0, 0, .08);
  --line-2: rgba(0, 0, 0, .14);
  --warm: #ec5a1c;
  --warm-2: #d9531a;
  --cool: #0f9f8a;
  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Segoe UI", sans-serif;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --wrap: 1200px;
  --pad: clamp(20px, 5vw, 48px);
  --ease: cubic-bezier(.2, .7, .1, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink-2);
  font: 400 17px/1.8 var(--sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
p { margin: 0; }
strong { color: var(--ink); font-weight: 600; }
h1, h2, h3 { margin: 0; color: var(--ink); font-weight: 700; }
ul { margin: 0; padding: 0; list-style: none; }
::selection { background: rgba(236, 90, 28, .22); color: var(--ink); }
:focus-visible { outline: 2px solid var(--warm-2); outline-offset: 3px; border-radius: 4px; }

.wrap { width: 100%; max-width: calc(var(--wrap) + var(--pad) * 2); margin: 0 auto; padding: 0 var(--pad); }
.line { display: block; }

/* 噪点纹理 */
.grain {
  position: fixed; inset: 0; z-index: 100; pointer-events: none; opacity: .05;
  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='.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 .9 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* 光晕 */
.glow { position: absolute; pointer-events: none; border-radius: 50%; filter: blur(90px); opacity: .6; }
.glow-a { width: 720px; height: 520px; left: -160px; top: -120px; background: radial-gradient(closest-side, rgba(255, 150, 90, .42), transparent); }
.glow-b { width: 640px; height: 560px; right: -200px; top: 120px; background: radial-gradient(closest-side, rgba(47, 208, 181, .22), transparent); }
.glow-c { width: 760px; height: 520px; left: 50%; top: 10%; transform: translateX(-50%); background: radial-gradient(closest-side, rgba(255, 170, 110, .22), rgba(47, 208, 181, .08) 60%, transparent); }

/* 顶栏 */
.bar {
  position: sticky; top: 0; z-index: 50;
  background: rgba(247, 245, 241, .8);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  backdrop-filter: saturate(140%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.bar-in { display: flex; align-items: center; justify-content: space-between; height: 60px; }
.mark { display: flex; align-items: baseline; gap: 10px; }
.mark b { color: var(--ink); font-size: 18px; font-weight: 700; letter-spacing: .04em; }
.mark span { color: var(--ink-3); font-size: 13px; }
.nav { display: flex; align-items: center; gap: 4px; font-size: 14px; }
.nav a { padding: 6px 12px; border-radius: 999px; color: var(--ink-2); transition: color .2s, background .2s; }
.nav a:hover { color: var(--ink); background: rgba(0, 0, 0, .05); }
.nav .nav-cta { border: 1px solid var(--line-2); color: var(--ink); }

/* 按钮 */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  height: 50px; padding: 0 24px; border-radius: 999px;
  font-size: 16px; font-weight: 500; white-space: nowrap;
  transition: transform .25s var(--ease), background .25s, border-color .25s, box-shadow .25s;
}
.btn .arr { transition: transform .25s var(--ease); }
.btn:hover .arr { transform: translateX(4px); }
.btn-solid { background: var(--ink); color: #fff; box-shadow: 0 12px 32px -14px rgba(236, 90, 28, .55); }
.btn-solid:hover { background: #000; transform: translateY(-1px); }
.btn-line { border: 1px solid var(--line-2); color: var(--ink); background: rgba(255, 255, 255, .6); }
.btn-line:hover { border-color: rgba(0, 0, 0, .3); background: #fff; }

.dot { display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: var(--cool); box-shadow: 0 0 10px var(--cool); }

/* Hero */
.hero { position: relative; overflow: hidden; padding: clamp(96px, 16vh, 168px) 0 clamp(88px, 12vh, 140px); border-bottom: 1px solid var(--line); }
.hero::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 80px 80px;
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, #000 20%, transparent 75%);
  mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, #000 20%, transparent 75%);
  opacity: .5;
}
.hero .wrap { position: relative; z-index: 1; }
.kicker {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 7px 16px 7px 14px; margin-bottom: 40px;
  border: 1px solid var(--line-2); border-radius: 999px;
  background: rgba(255, 255, 255, .65);
  font-size: 14px; color: var(--ink-2);
}
.kicker b { color: var(--ink); font-weight: 600; }
.kicker i { font-style: normal; color: var(--ink-3); }
.hero h1 {
  font-size: clamp(40px, 8.2vw, 112px);
  line-height: 1.25; letter-spacing: -.02em; font-weight: 700;
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(100deg, #141416 0%, #6b3417 30%, var(--warm) 68%, #ff8a4c 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-foot {
  display: flex; align-items: flex-end; justify-content: space-between; gap: 48px;
  margin-top: clamp(48px, 7vw, 88px); padding-top: 32px; border-top: 1px solid var(--line);
}
.lede { font-size: clamp(17px, 1.5vw, 20px); line-height: 1.85; color: var(--ink-2); }
.actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* 粉丝数据栏 */
.stats {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-top: clamp(40px, 5vw, 64px); border-top: 1px solid var(--line-2);
}
.stat { display: flex; flex-direction: column; gap: 6px; padding: 28px 24px 4px 0; }
.stat + .stat { padding-left: 24px; border-left: 1px solid var(--line); }
.st-num {
  font-size: clamp(40px, 5.4vw, 76px); line-height: 1.1; font-weight: 700; letter-spacing: -.02em;
  font-variant-numeric: tabular-nums;
  background: linear-gradient(100deg, #141416 10%, var(--warm) 90%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.st-num small { font-size: .42em; font-weight: 600; margin-left: 4px; }
.st-label { font-size: 14px; color: var(--ink-3); }
.stats-note { margin-top: 16px; font-size: 13px; color: var(--ink-3); }

/* 项目 */
.project { position: relative; padding: clamp(96px, 12vw, 160px) 0 0; }
.project + .project { padding-top: clamp(112px, 14vw, 180px); }
.p-head { display: flex; align-items: center; gap: 16px; margin-bottom: 24px; }
.p-no { font: 500 14px/1 var(--mono); color: var(--ink-3); letter-spacing: .06em; padding-right: 16px; border-right: 1px solid var(--line-2); }
.p-name { font-size: 18px; font-weight: 600; color: var(--ink); }
.tag {
  display: inline-flex; align-items: center; gap: 8px;
  height: 28px; padding: 0 12px; border-radius: 999px; font-size: 13px; font-weight: 500;
  border: 1px solid var(--line-2);
}
.tag-live { color: #0b7a6a; border-color: rgba(15, 159, 138, .35); background: rgba(15, 159, 138, .08); }
.tag-dev { color: #b3450f; border-color: rgba(236, 90, 28, .35); background: rgba(236, 90, 28, .07); }
.tag-dev .dot { background: var(--warm); box-shadow: 0 0 10px var(--warm); }
.p-title { font-size: clamp(34px, 5.6vw, 76px); line-height: 1.25; letter-spacing: -.015em; }
.p-body {
  display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: end; gap: 40px;
  margin-top: 36px;
}
.p-copy { font-size: clamp(17px, 1.4vw, 19px); line-height: 1.9; }

.stage { position: relative; margin: clamp(48px, 6vw, 72px) 0 0; }
.stage::before {
  content: ""; position: absolute; left: 8%; right: 8%; top: 14%; bottom: -6%;
  border-radius: 50%; filter: blur(80px); opacity: .35; z-index: 0;
}
.stage-warm::before { background: radial-gradient(closest-side, rgba(255, 122, 61, .7), rgba(255, 180, 107, .2) 60%, transparent); }
.stage-cool::before { background: radial-gradient(closest-side, rgba(47, 208, 181, .5), rgba(255, 122, 61, .15) 60%, transparent); }
.frame {
  position: relative; z-index: 1;
  padding: 0 10px 10px; border-radius: 16px;
  background: linear-gradient(180deg, #ffffff, #f4f2ee);
  border: 1px solid var(--line-2);
  box-shadow: inset 0 1px 0 #fff, 0 40px 80px -40px rgba(20, 20, 22, .28);
  overflow: hidden;
}
.chrome { display: flex; gap: 7px; height: 34px; align-items: center; padding-left: 6px; }
.chrome i { width: 10px; height: 10px; border-radius: 50%; background: rgba(0, 0, 0, .12); }
.frame img { width: 100%; border-radius: 8px; background: #f4f2ee; }
a.frame { display: block; transition: transform .4s var(--ease), box-shadow .4s var(--ease); }
a.frame:hover { transform: translateY(-4px); box-shadow: inset 0 1px 0 #fff, 0 48px 90px -40px rgba(20, 20, 22, .34); }
.stage figcaption {
  position: relative; z-index: 1;
  display: flex; align-items: center; gap: 14px; margin-top: 18px;
  font-size: 14px; color: var(--ink-3);
}
.cap-no { font: 500 12px/1 var(--mono); letter-spacing: .08em; color: var(--ink-3); padding: 5px 8px; border: 1px solid var(--line); border-radius: 6px; }

/* 内容平台 */
.channels { padding: clamp(120px, 14vw, 200px) 0 clamp(80px, 10vw, 140px); }
.story { padding: clamp(112px, 13vw, 180px) 0 0; }
.story-body { max-width: 820px; display: grid; gap: 28px; }
.p-progress { margin-top: 24px; padding-top: 18px; border-top: 1px solid var(--line); font-size: 15px; line-height: 1.75; }
.p-progress .pg-title { font: 500 12px/1 var(--mono); letter-spacing: .08em; color: var(--ink-3); margin-bottom: 12px; }
.p-progress ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.p-progress li { display: grid; grid-template-columns: 4.5em minmax(0, 1fr); gap: 12px; color: var(--ink-2); }
.p-progress li b { font-weight: 600; color: var(--ink); }
.s-head { display: flex; align-items: baseline; gap: 20px; padding-bottom: 36px; }
.s-no { font: 500 14px/1 var(--mono); letter-spacing: .06em; color: var(--ink-3); }
.s-head h2 { font-size: clamp(30px, 4.4vw, 56px); line-height: 1.25; letter-spacing: -.01em; }
.ledger { border-top: 1px solid var(--line-2); }
.row {
  display: grid; grid-template-columns: 96px minmax(0, 1.1fr) 132px minmax(0, 1.3fr) 170px;
  align-items: center; gap: 24px;
  padding: 26px 0; border-bottom: 1px solid var(--line);
  transition: background .25s;
}
.row:hover { background: linear-gradient(90deg, transparent, rgba(0, 0, 0, .025) 20%, rgba(0, 0, 0, .025) 80%, transparent); }
.r-plat { font-size: 14px; color: var(--ink-3); }
.r-fans { font-size: 14px; color: var(--ink-3); white-space: nowrap; }
.r-fans b { font-size: 22px; font-weight: 700; color: var(--warm); margin-right: 2px; font-variant-numeric: tabular-nums; }
.r-acct { font-size: 19px; font-weight: 600; color: var(--ink); overflow-wrap: anywhere; }
.r-acct.mono { font-family: var(--mono); font-size: 17px; font-weight: 500; letter-spacing: -.01em; }
.r-desc { font-size: 16px; color: var(--ink-2); }
.num { font-family: var(--sans); font-size: 1.15em; color: var(--warm); font-weight: 700; font-variant-numeric: tabular-nums; }
.r-link { justify-self: end; font-size: 15px; color: var(--ink); white-space: nowrap; border-bottom: 1px solid var(--line-2); padding-bottom: 2px; transition: border-color .2s, color .2s; }
.r-link:hover { color: var(--warm); border-color: var(--warm); }
.r-none { border: 0; }
.ledger-sub { display: flex; align-items: baseline; gap: 12px; margin: 72px 0 20px; }
.ledger-sub span { font-size: 14px; color: var(--ink-3); }
.ledger-sub b { font-size: 22px; color: var(--ink); font-weight: 600; }

/* 联系 */
.contact { position: relative; overflow: hidden; padding: clamp(100px, 13vw, 180px) 0; border-top: 1px solid var(--line); background: linear-gradient(180deg, var(--bg), var(--bg-2)); }
.contact-in { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 64px; }
.c-copy .s-no { display: block; margin-bottom: 28px; }
.contact h2 { font-size: clamp(32px, 5vw, 64px); line-height: 1.25; letter-spacing: -.015em; }
.c-text { margin-top: 32px; font-size: clamp(17px, 1.4vw, 19px); line-height: 1.9; }
.qr-card {
  width: 300px; padding: 16px; border-radius: 20px;
  background: #fff;
  border: 1px solid var(--line-2);
  box-shadow: 0 30px 80px -30px rgba(236, 90, 28, .35);
}
.qr-plate { background: #fff; border-radius: 12px; padding: 14px; }
.qr-plate img { width: 100%; }
.qr-meta { display: flex; align-items: baseline; justify-content: space-between; padding: 16px 6px 4px; }
.qr-label { font-size: 13px; color: var(--ink-3); }
.qr-id { font: 500 18px/1 var(--mono); color: var(--ink); letter-spacing: .02em; }

/* 页脚 */
.foot { border-top: 1px solid var(--line); font-size: 14px; color: var(--ink-3); }
.foot-in { display: flex; justify-content: space-between; gap: 16px; padding-top: 28px; padding-bottom: 28px; flex-wrap: wrap; }
.foot a { color: var(--ink-2); transition: color .2s; }
.foot-links { display: flex; gap: 28px; flex-wrap: wrap; }
.foot a:hover { color: var(--ink); }

/* 入场动画：仅在 JS 可用时隐藏初始态 */
.js .reveal { opacity: 0; transform: translateY(22px); transition: opacity .9s var(--ease), transform .9s var(--ease); }
.js .reveal.in { opacity: 1; transform: none; }
.js .stage.reveal { transform: translateY(40px) scale(.985); transition-duration: 1.2s; }
.js .stage.reveal.in { transform: none; }
.js .hero .reveal:nth-child(2) { transition-delay: .08s; }
.js .hero-foot .reveal:nth-child(2) { transition-delay: .16s; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .reveal, .js .stage.reveal { opacity: 1; transform: none; transition: none; }
  .btn, .btn .arr, .row { transition: none; }
}

/* 平板 */
@media (max-width: 960px) {
  .hero-foot { flex-direction: column; align-items: flex-start; gap: 32px; }
  .p-body { grid-template-columns: 1fr; gap: 28px; }
  .row { grid-template-columns: 96px minmax(0, 1fr) auto; row-gap: 6px; }
  .row .r-fans { grid-column: 2 / 3; grid-row: 2; }
  .row .r-desc { grid-column: 2 / 3; grid-row: 3; }
  .row .r-link { grid-column: 3; grid-row: 1 / 4; }
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stat:nth-child(3) { padding-left: 0; border-left: 0; }
  .stat:nth-child(n+3) { border-top: 1px solid var(--line); }
  .contact-in { grid-template-columns: 1fr; gap: 48px; }
}

/* 手机 */
@media (max-width: 600px) {
  body { font-size: 16px; }
  .bar-in { height: 54px; }
  .mark span { display: none; }
  .nav a { padding: 6px 10px; }
  .hero { padding: 72px 0 64px; }
  .glow-a { width: 420px; height: 360px; left: -140px; top: -80px; }
  .glow-b { width: 380px; height: 380px; right: -180px; top: 220px; }
  .kicker { margin-bottom: 28px; }
  .hero h1 { font-size: clamp(32px, 9.6vw, 44px); letter-spacing: -.01em; }
  .hero-foot { margin-top: 40px; padding-top: 28px; }
  .actions { width: 100%; flex-direction: column; }
  .actions .btn { width: 100%; justify-content: center; }
  .project { padding-top: 80px; }
  .project + .project { padding-top: 96px; }
  .p-title { font-size: 30px; }
  .p-act .btn { width: 100%; justify-content: center; }
  .frame { padding: 0 6px 6px; border-radius: 12px; }
  .chrome { height: 26px; gap: 6px; }
  .chrome i { width: 8px; height: 8px; }
  .frame img { border-radius: 6px; }
  .channels { padding: 104px 0 72px; }
  .story { padding-top: 96px; }
  .s-head { flex-direction: column; gap: 14px; padding-bottom: 28px; }
  .s-head h2 { font-size: 28px; }
  .row { grid-template-columns: 1fr; gap: 6px; padding: 22px 0; }
  .row .r-fans, .row .r-desc, .row .r-link { grid-column: auto; grid-row: auto; }
  .r-fans:empty { display: none; }
  .stat { padding-right: 12px; }
  .stat + .stat { padding-left: 12px; }
  .stat:nth-child(3) { padding-left: 0; }
  .r-plat { font-size: 13px; }
  .r-link { justify-self: start; margin-top: 8px; }
  .r-none { display: none; }
  .ledger-sub { margin-top: 56px; }
  .contact { padding: 88px 0 96px; }
  .contact h2 { font-size: 30px; }
  .qr-card { width: 100%; max-width: 320px; }
}

/* 文章栏目 */
.notes { padding: clamp(112px, 13vw, 180px) 0 0; }
.note-list { display: grid; gap: 16px; border-top: 1px solid var(--line); padding-top: 28px; }
.note-card { display: grid; gap: 10px; padding: 28px 32px; border: 1px solid var(--line-2); border-radius: 16px; background: rgba(255, 255, 255, .6); transition: transform .3s var(--ease), border-color .3s, background .3s; }
.note-card:hover { transform: translateY(-3px); border-color: rgba(0, 0, 0, .24); background: #fff; }
.nc-meta { font: 500 13px/1.4 var(--mono); color: var(--ink-3); }
.nc-title { font-size: clamp(22px, 2.4vw, 28px); line-height: 1.4; font-weight: 700; color: var(--ink); }
.nc-desc { font-size: 15px; line-height: 1.8; color: var(--ink-2); max-width: 820px; }
.nc-more { font-size: 14px; font-weight: 600; color: var(--warm-2); }

.note-page { padding: 100px 0 40px; }
.crumbs { display: flex; gap: 10px; font-size: 14px; color: var(--ink-3); margin-bottom: 28px; }
.crumbs a:hover { color: var(--ink); }
.note { max-width: 760px; }
.note-date { font: 500 13px/1.4 var(--mono); color: var(--ink-3); margin-bottom: 18px; }
.note h1 { font-size: clamp(30px, 4.6vw, 48px); line-height: 1.3; letter-spacing: -.01em; margin-bottom: 28px; }
.note-lead { font-size: 18px; line-height: 1.9; color: var(--ink-2); }
.note h2 { font-size: clamp(22px, 2.6vw, 28px); line-height: 1.4; margin: 56px 0 18px; padding-top: 24px; border-top: 1px solid var(--line); }
.note p { margin: 0 0 6px; line-height: 1.95; }
.note ul { margin: 12px 0 16px; display: grid; gap: 8px; }
.note li { position: relative; padding-left: 20px; line-height: 1.85; }
.note li::before { content: ""; position: absolute; left: 4px; top: .8em; width: 6px; height: 6px; border-radius: 50%; background: var(--warm); }
.note-source { margin-top: 48px !important; padding: 18px 20px; border-radius: 12px; background: var(--bg-2); font-size: 14px; color: var(--ink-3); }
.note-cta { max-width: 760px; margin: 56px 0 40px; padding: 32px; border-radius: 18px; border: 1px solid var(--line-2); background: #fff; display: grid; gap: 10px; justify-items: start; }
.note-cta-title { font-size: 20px; font-weight: 700; color: var(--ink); }
.note-cta .btn { margin-top: 8px; }
@media (max-width: 720px) {
  .notes { padding-top: 96px; }
  .note-card { padding: 22px 20px; }
  .note-page { padding-top: 84px; }
  .note-cta { padding: 24px 20px; }
}