/* ============================================================
   纸行智能 HAOZHI INTELLIGENCE · 官网样式
   设计语汇：纸（纸感底色）· 墨（黑）· 光谱（彩虹点缀）· 画板（hairline 网格）
   零第三方依赖，仅系统字体与本文件的 CSS / 内联 SVG / Canvas。
   ============================================================ */

/* ---------- 0. 变量 ---------- */
:root {
  --paper: #f6f4ef;
  --paper-2: #efece5;
  --paper-3: #e6e2d9;
  --ink: #0e0e0f;
  --ink-2: #1a1a1c;
  --ink-soft: rgba(14, 14, 15, 0.66);
  --ink-mute: rgba(14, 14, 15, 0.6);
  --line: rgba(14, 14, 15, 0.13);
  --line-strong: rgba(14, 14, 15, 0.24);
  --dark: #101011;
  --dark-2: #16161a;
  --sp-red: #ff3b30;
  --sp-amber: #ff9f0a;
  --sp-yellow: #ffcc00;
  --sp-green: #34c759;
  --sp-blue: #0a84ff;
  --sp-violet: #bf5af2;
  --sp: linear-gradient(90deg, var(--sp-red), var(--sp-amber), var(--sp-yellow), var(--sp-green), var(--sp-blue), var(--sp-violet));
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --pad: clamp(20px, 4.6vw, 64px);
  --maxw: 1320px;
  --radius: 18px;
  --nav-h: 72px;
  --safe-top: env(safe-area-inset-top, 0px);
}

/* ---------- 1. 基础 ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + var(--safe-top) + 8px);
}
html.scroll-instant { scroll-behavior: auto !important; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  letter-spacing: 0.006em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 9998;
  pointer-events: none;
  opacity: 0.028;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)'/%3E%3C/svg%3E");
}

img, svg, canvas { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
h1, h2, h3, h4, p, dl, dd, ul, ol { margin: 0; }
ul, ol { padding: 0; list-style: none; }
::selection { background: rgba(255, 159, 10, 0.24); }

:focus-visible {
  outline: 2px solid var(--sp-blue);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 50%;
  translate: -50% -160%;
  z-index: 9999;
  padding: 13px 20px;
  border-radius: 999px;
  background: var(--ink);
  color: var(--paper);
  font-size: 13px;
  transition: translate 0.3s var(--ease);
}
.skip-link:focus { translate: -50% 0; }

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

/* ---------- 2. 通用文本组件 ---------- */
.section { position: relative; padding-block: clamp(72px, 10.5vw, 148px); }

.section__kicker {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 22px;
}
.kicker__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 30px;
  height: 22px;
  padding-inline: 7px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 10.5px;
  letter-spacing: 0.06em;
  color: var(--ink);
}

.section__head { max-width: 860px; margin-bottom: clamp(38px, 5vw, 70px); }

.section__title {
  font-size: clamp(32px, 4.5vw, 62px);
  line-height: 1.14;
  font-weight: 700;
  letter-spacing: -0.022em;
}
.section__title--sm { font-size: clamp(30px, 3.7vw, 50px); }

.section__lead {
  margin-top: 22px;
  max-width: 56ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.textlink {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding-block: 4px;
  font-size: 13.5px;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--line-strong);
  padding-bottom: 2px;
  transition: color 0.25s, border-color 0.25s;
}
.textlink:hover { color: var(--ink); border-color: var(--ink); }

/* ---------- 3. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  height: 52px;
  padding-inline: 26px;
  border-radius: 999px;
  font-size: 14.5px;
  font-weight: 600;
  letter-spacing: 0.01em;
  white-space: nowrap;
  transition: transform 0.35s var(--ease), background-color 0.3s, color 0.3s, box-shadow 0.35s,
    border-color 0.3s;
}
.btn__arrow { font-size: 15px; transition: transform 0.35s var(--ease); }
.btn:hover .btn__arrow { transform: translateX(4px); }

.btn--ink { background: var(--ink); color: var(--paper); }
.btn--ink:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 30px -14px rgba(14, 14, 15, 0.55);
}
.btn--ghost { border: 1px solid var(--line-strong); color: var(--ink); background: transparent; }
.btn--ghost:hover { background: rgba(14, 14, 15, 0.045); transform: translateY(-2px); }
.btn--sm { height: 40px; padding-inline: 18px; font-size: 13px; }

/* ---------- 4. 导航 ---------- */
.nav {
  position: fixed;
  inset: 0 0 auto;
  z-index: 60;
  height: calc(var(--nav-h) + var(--safe-top));
  padding-top: var(--safe-top);
  background: rgba(246, 244, 239, 0);
  border-bottom: 1px solid transparent;
  transition: background-color 0.4s var(--ease), border-color 0.4s, backdrop-filter 0.4s;
}
.nav.is-scrolled {
  background: rgba(246, 244, 239, 0.95);
  border-bottom-color: var(--line);
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: 100%;
  max-width: var(--maxw);
  height: 100%;
  margin-inline: auto;
  padding-inline: var(--pad);
}

.nav__brand { display: inline-flex; align-items: center; gap: 11px; }
.nav__mark { width: 36px; height: 26px; flex: none; display: grid; place-items: center; }
.nav__mark img { width: 100%; height: auto; display: block; }
.nav__word { display: flex; flex-direction: column; line-height: 1.15; }
.nav__word b { font-size: 15px; font-weight: 700; letter-spacing: 0.04em; }
.nav__word i {
  font-family: var(--font-mono);
  font-style: normal;
  font-size: 8px;
  letter-spacing: 0.19em;
  color: var(--ink-mute);
  margin-top: 3px;
}

.nav__links { display: flex; align-items: center; gap: clamp(18px, 2.4vw, 34px); }
.nav__links a {
  position: relative;
  font-size: 13.5px;
  color: var(--ink-soft);
  padding-block: 6px;
  transition: color 0.25s;
}
.nav__links a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--ink);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.4s var(--ease);
}
.nav__links a:hover { color: var(--ink); }
.nav__links a:hover::after { transform: scaleX(1); transform-origin: left; }
.nav__links a.is-active { color: var(--ink); }
.nav__links a.is-active::after { transform: scaleX(1); transform-origin: left; }

.nav__actions { display: flex; align-items: center; gap: 10px; }
.nav__replay {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink-soft);
  transition: color 0.25s, border-color 0.25s, transform 0.5s var(--ease);
}
.nav__replay svg { width: 18px; height: 18px; }
.nav__replay:hover { color: var(--ink); border-color: var(--line-strong); transform: rotate(-90deg); }

.nav__toggle { display: none; width: 44px; height: 44px; border: 1px solid var(--line); border-radius: 999px; }
.nav__toggle span {
  display: block;
  width: 16px;
  height: 1.5px;
  margin: 4px auto;
  background: var(--ink);
  transition: transform 0.3s var(--ease), opacity 0.3s;
}

/* 移动端菜单 */
.menu {
  position: fixed;
  inset: 0;
  z-index: 70;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: calc(var(--nav-h) + var(--safe-top) + 24px) var(--pad) calc(40px + env(safe-area-inset-bottom, 0px));
  background: var(--paper);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-12px);
  transition: opacity 0.4s var(--ease), transform 0.5s var(--ease), visibility 0.4s;
}
.menu.is-open { opacity: 1; visibility: visible; transform: none; }
.menu__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: clamp(18px, 4vh, 36px);
}
.menu__brand { display: flex; flex-direction: column; font-size: 15px; font-weight: 700; letter-spacing: 0.04em; }
.menu__brand i {
  font-style: normal;
  font-family: var(--font-mono);
  font-size: 8px;
  font-weight: 400;
  letter-spacing: 0.18em;
  color: var(--ink-mute);
  margin-top: 4px;
}
.menu__close {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  color: var(--ink);
  transition: background-color 0.25s, transform 0.3s var(--ease);
}
.menu__close svg { width: 18px; height: 18px; }
.menu__close:hover { background: rgba(14, 14, 15, 0.05); transform: rotate(90deg); }
.menu__links { display: flex; flex-direction: column; gap: 6px; }
.menu__links a {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-block: 12px;
  border-bottom: 1px solid var(--line);
  font-size: clamp(26px, 7vw, 36px);
  font-weight: 600;
  letter-spacing: -0.02em;
}
.menu__links a span {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--ink-mute);
}
.menu__foot { font-size: 13px; color: var(--ink-soft); }
.menu__soft { color: var(--ink-mute); font-size: 11.5px; margin-top: 4px; }
body.menu-open { overflow: hidden; }

/* ---------- 5. 首屏 ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding: calc(var(--nav-h) + var(--safe-top) + clamp(28px, 5vh, 60px)) var(--pad) clamp(64px, 9vh, 96px);
  overflow: hidden;
  isolation: isolate;
}
.hero__bg {
  position: absolute;
  inset: 0;
  z-index: -2;
  background-image: radial-gradient(rgba(14, 14, 15, 0.17) 1px, transparent 1px);
  background-size: 26px 26px;
  -webkit-mask-image: radial-gradient(115% 85% at 72% 18%, #000 0%, rgba(0, 0, 0, 0.35) 52%, transparent 78%);
  mask-image: radial-gradient(115% 85% at 72% 18%, #000 0%, rgba(0, 0, 0, 0.35) 52%, transparent 78%);
}
.hero__glow {
  position: absolute;
  z-index: -1;
  top: -26vw;
  right: -14vw;
  width: 66vw;
  height: 66vw;
  border-radius: 50%;
  background: conic-gradient(
    from 210deg,
    rgba(255, 59, 48, 0.1),
    rgba(255, 159, 10, 0.08),
    rgba(255, 204, 0, 0.06),
    rgba(52, 199, 89, 0.06),
    rgba(10, 132, 255, 0.09),
    rgba(191, 90, 242, 0.1),
    rgba(255, 59, 48, 0.1)
  );
  filter: blur(72px);
  opacity: 0.85;
  pointer-events: none;
}

/* 画板框架 */
.artboard {
  position: absolute;
  inset: clamp(14px, 2.4vw, 34px);
  z-index: 0;
  border: 1px solid rgba(14, 14, 15, 0.09);
  pointer-events: none;
}
.artboard__corner {
  position: absolute;
  width: 13px;
  height: 13px;
  border: 1.5px solid var(--ink);
  opacity: 0.7;
}
.artboard__corner--tl { top: -1px; left: -1px; border-right: 0; border-bottom: 0; }
.artboard__corner--tr { top: -1px; right: -1px; border-left: 0; border-bottom: 0; }
.artboard__corner--bl { bottom: -1px; left: -1px; border-right: 0; border-top: 0; }
.artboard__corner--br { bottom: -1px; right: -1px; border-left: 0; border-top: 0; }
.artboard__tag {
  position: absolute;
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-mute);
  background: var(--paper);
  padding: 2px 8px;
  white-space: nowrap;
}
.artboard__tag--tl { top: 56px; left: 26px; }
.artboard__tag--br { bottom: -9px; right: 26px; }
.artboard__ruler {
  position: absolute;
  top: 0;
  bottom: 0;
  left: -1px;
  width: 1px;
  background: repeating-linear-gradient(to bottom, var(--line-strong) 0 1px, transparent 1px 14px);
  opacity: 0.8;
}

/* 主内容网格 */
.hero__inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.78fr);
  grid-template-areas:
    "eyebrow mark"
    "title   mark"
    "en      mark"
    "row     mark"
    "meta    meta";
  align-items: start;
  column-gap: clamp(20px, 4vw, 64px);
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
}

.hero__eyebrow {
  grid-area: eyebrow;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: clamp(18px, 2.4vh, 28px);
}
.hero__eyebrow .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--sp);
  flex: none;
}
.hero__eyebrow .sep { color: var(--line-strong); }

.hero__title {
  grid-area: title;
  font-size: clamp(56px, 8.6vw, 140px);
  line-height: 0.96;
  font-weight: 700;
  letter-spacing: -0.03em;
  white-space: nowrap;
}
.hero__title .sw-char { line-height: 0.96; }

.hero__en {
  grid-area: en;
  margin-top: clamp(12px, 1.8vh, 20px);
  font-family: var(--font-mono);
  font-size: clamp(10px, 1.05vw, 13px);
  letter-spacing: 0.34em;
  color: var(--ink-soft);
  text-transform: uppercase;
}

.hero__row {
  grid-area: row;
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: clamp(20px, 3vw, 40px);
  margin-top: clamp(24px, 3.4vh, 40px);
}
.hero__desc {
  max-width: 38ch;
  font-size: clamp(14px, 1.12vw, 15.5px);
  line-height: 1.85;
  color: var(--ink-soft);
}
.hero__cta { display: flex; flex-wrap: wrap; gap: 12px; }

.hero__meta {
  grid-area: meta;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(16px, 2.4vw, 40px);
  margin-top: clamp(32px, 5vh, 56px);
  padding-top: 18px;
  border-top: 1px solid var(--line);
}
.hero__meta dt {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--ink-mute);
  text-transform: uppercase;
  margin-bottom: 6px;
}
.hero__meta dd { font-size: 13px; color: var(--ink-soft); line-height: 1.6; }

/* 品牌轨道图形 */
.hero__mark {
  grid-area: mark;
  align-self: center;
  justify-self: center;
  width: min(100%, 560px);
  color: var(--ink);
  opacity: 0.94;
}
.hero__mark .mark { width: 100%; height: auto; }
.hero__mark .mark__ring,
.hero__mark .mark__float { will-change: transform; transform-box: fill-box; transform-origin: center; }
.hero__mark .mark__nodes circle { fill: var(--paper); stroke: var(--ink); stroke-width: 1.6; }
.hero__mark .mark__orbit ellipse { opacity: 0.9; }
.hero__mark .mark__orbit ellipse:last-child { opacity: 0.4; }

.hero__scroll {
  position: absolute;
  left: var(--pad);
  bottom: clamp(20px, 3.4vh, 34px);
  z-index: 3;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding-block: 8px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-mute);
  transition: color 0.3s;
}
.hero__scroll:hover { color: var(--ink); }
.hero__scroll-line {
  width: 34px;
  height: 1px;
  background: var(--ink-mute);
  position: relative;
  overflow: hidden;
}
.hero__scroll-line::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--ink);
  transform: translateX(-100%);
  animation: scrollLine 2.6s var(--ease) infinite;
}
@keyframes scrollLine {
  0% { transform: translateX(-100%); }
  45%, 55% { transform: translateX(0); }
  100% { transform: translateX(100%); }
}

html.is-swarming .nav__actions { opacity: 0; pointer-events: none; }
html.is-swarming body::before,
html.build-ready body::before { opacity: 0; }

/* ---------- 5.5 跑马灯 ---------- */
.marquee {
  position: relative;
  overflow: hidden;
  border-block: 1px solid var(--line);
  background: var(--paper-2);
}
.marquee__track {
  display: flex;
  align-items: center;
  gap: clamp(18px, 3vw, 44px);
  width: max-content;
  padding-block: 13px;
  animation: marqueeMove 34s linear infinite;
  will-change: transform;
}
.marquee span {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-soft);
  white-space: nowrap;
}
.marquee i { width: 5px; height: 5px; border-radius: 50%; background: var(--sp); flex: none; }
@keyframes marqueeMove {
  from { transform: translate3d(0, 0, 0); }
  to { transform: translate3d(-50%, 0, 0); }
}
.marquee:hover .marquee__track { animation-play-state: paused; }

/* ---------- 6. 服务 ---------- */
.services { background: var(--paper); }
.services__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(16px, 1.8vw, 26px);
}
.svc {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: clamp(22px, 2.6vw, 36px);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.62), rgba(255, 255, 255, 0.2));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.5s var(--ease), box-shadow 0.5s var(--ease), border-color 0.4s;
}
.svc:hover {
  transform: translateY(-4px);
  border-color: var(--line-strong);
  box-shadow: 0 26px 50px -34px rgba(14, 14, 15, 0.4);
}
.svc__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: clamp(24px, 3vw, 40px);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.svc__index { color: var(--ink); }
.svc__role { color: var(--ink-mute); }
.svc__title {
  font-size: clamp(22px, 2.2vw, 28px);
  font-weight: 700;
  letter-spacing: -0.015em;
  margin-bottom: 10px;
}
.svc__desc { font-size: 14px; line-height: 1.85; color: var(--ink-soft); max-width: 42ch; }
.svc__list {
  display: grid;
  gap: 0;
  margin-top: auto;
  padding-top: clamp(20px, 2.6vw, 30px);
}
.svc__list li {
  position: relative;
  padding: 9px 0 9px 18px;
  font-size: 13px;
  color: var(--ink-soft);
  border-top: 1px solid rgba(14, 14, 15, 0.07);
}
.svc__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 17px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--ink-mute);
  transition: background 0.3s;
}
.svc:hover .svc__list li::before { background: var(--sp); }
.svc__hair {
  position: absolute;
  inset: 0 0 auto;
  height: 2px;
  background: var(--sp);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.7s var(--ease);
}
.svc:hover .svc__hair { transform: scaleX(1); }

/* ---------- 7. 工作（深色） ---------- */
.work {
  background: var(--dark);
  color: var(--paper);
  position: relative;
  overflow: hidden;
}
.work::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 1px;
  background: var(--sp);
  opacity: 0.9;
}
.work::after {
  content: "";
  position: absolute;
  z-index: 0;
  top: -30%;
  left: 50%;
  width: 90vw;
  height: 60vw;
  translate: -50% 0;
  background: radial-gradient(ellipse at center, rgba(10, 132, 255, 0.13), transparent 62%);
  pointer-events: none;
}
.work .wrap { position: relative; z-index: 1; }
.work .section__kicker { color: rgba(246, 244, 239, 0.56); }
.work .kicker__num { color: var(--paper); border-color: rgba(246, 244, 239, 0.22); }

.work__list { display: flex; flex-direction: column; border-top: 1px solid rgba(246, 244, 239, 0.14); }
.case {
  display: grid;
  grid-template-columns: minmax(0, 0.62fr) minmax(0, 1fr);
  gap: clamp(20px, 3.4vw, 56px);
  align-items: center;
  padding-block: clamp(26px, 3.4vw, 44px);
  border-bottom: 1px solid rgba(246, 244, 239, 0.14);
}
.case__visual { position: relative; }
.chrome {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 8px 10px;
  background: rgba(255, 255, 255, 0.055);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-bottom: 0;
  border-radius: 10px 10px 0 0;
}
.chrome i { width: 6px; height: 6px; border-radius: 50%; background: rgba(246, 244, 239, 0.28); }
.chrome i:first-child { background: var(--sp-red); }
.chrome i:nth-child(2) { background: var(--sp-amber); }
.chrome i:nth-child(3) { background: var(--sp-green); }
.chrome span {
  margin-left: 8px;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.1em;
  color: rgba(246, 244, 239, 0.54);
}
.shot {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 0 0 10px 10px;
  background: var(--dark-2);
}
.shot--haozhi { background: #141418; }
.shot--haozhi img { width: 100%; height: 100%; object-fit: cover; display: block; }
.shot--brand { background: var(--paper); display: grid; place-items: center; padding: 9% 8%; }
.shot--brand img { width: min(82%, 430px); height: auto; opacity: 0.94; }
.shot--photo { background: linear-gradient(160deg, #1a2a4a, #2b1a3d 55%, #401f2b); }
.shot--photo .shot__block { position: absolute; }
.shot__block--sky {
  inset: 0;
  background: radial-gradient(circle at 72% 26%, rgba(255, 159, 10, 0.5), transparent 46%),
    linear-gradient(160deg, #16233f, #3a1d3e 60%, #4a2230);
}
.shot__block--sun {
  right: 16%;
  top: 20%;
  width: 26%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle, #ffe0a3, #ff9f0a 55%, rgba(255, 59, 48, 0.4) 78%, transparent 80%);
  filter: blur(1px);
  opacity: 0.85;
}
.shot__block--hill {
  left: -6%;
  right: -6%;
  bottom: -22%;
  height: 60%;
  border-radius: 50% 50% 0 0 / 92% 92% 0 0;
  background: linear-gradient(180deg, rgba(10, 10, 14, 0.86), #08080b);
}
.shot__line { position: absolute; height: 1px; background: rgba(246, 244, 239, 0.28); }
.shot__line--1 { left: 8%; bottom: 18%; width: 34%; }
.shot__line--2 { left: 8%; bottom: 13%; width: 22%; opacity: 0.5; }

.shot--swarm {
  background-color: #101012;
  background-image: radial-gradient(rgba(246, 244, 239, 0.16) 1px, transparent 1px);
  background-size: 16px 16px;
}
.sw-line { position: absolute; border: 1px dashed rgba(246, 244, 239, 0.3); border-radius: 3px; }
.sw-line--a { left: 14%; top: 18%; width: 38%; height: 26%; }
.sw-line--b { left: 38%; top: 52%; width: 34%; height: 24%; border-style: solid; border-color: rgba(10, 132, 255, 0.6); }
.sw-cursor {
  position: absolute;
  left: var(--x);
  top: var(--y);
  padding: 2px 7px;
  border-radius: 999px;
  background: var(--c);
  color: #101012;
  font-family: var(--font-mono);
  font-size: 8px;
  font-weight: 700;
  letter-spacing: 0.04em;
  transform: translate(-4px, -4px);
  box-shadow: 0 0 0 1px rgba(16, 16, 18, 0.5);
}
.sw-cursor::before {
  content: "";
  position: absolute;
  left: -1px;
  top: -1px;
  width: 11px;
  height: 12px;
  background: #fff;
  clip-path: polygon(0 0, 0 100%, 30% 72%, 52% 100%, 66% 92%, 44% 66%, 100% 66%);
  translate: -5px -4px;
  z-index: -1;
}

.case__body { display: flex; flex-direction: column; }
.case__meta {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(246, 244, 239, 0.56);
  margin-bottom: 12px;
}
.case__meta span { margin-inline: 4px; }
.case__title {
  font-size: clamp(21px, 2.3vw, 30px);
  font-weight: 700;
  letter-spacing: -0.015em;
  margin-bottom: 12px;
}
.case__desc { font-size: 13.5px; line-height: 1.85; color: rgba(246, 244, 239, 0.62); max-width: 52ch; }
.case__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: clamp(18px, 2.4vw, 28px);
}
.case__link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding-block: 4px;
  font-size: 13px;
  color: var(--paper);
  border-bottom: 1px solid rgba(246, 244, 239, 0.3);
  padding-bottom: 3px;
  transition: gap 0.3s var(--ease), border-color 0.3s;
}
.case__link:hover { gap: 11px; border-color: var(--paper); }
.case__link--btn { border: 0; border-bottom: 1px solid rgba(246, 244, 239, 0.3); padding: 0 0 3px; }
.case__tags {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(246, 244, 239, 0.52);
}
.case__status {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: rgba(255, 159, 10, 0.9);
  padding: 4px 10px;
  border: 1px solid rgba(255, 159, 10, 0.28);
  border-radius: 999px;
}

/* ---------- 8. 能力 ---------- */
.cap__grid {
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(0, 1fr);
  gap: clamp(32px, 6vw, 96px);
  align-items: start;
}
.cap__left { position: sticky; top: calc(var(--nav-h) + 40px); }
.cap__left .section__title { margin-bottom: 22px; }
.cap__standards { display: flex; flex-wrap: wrap; gap: 8px; margin-top: clamp(22px, 3vw, 32px); }
.std {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  padding: 6px 11px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink-soft);
}
.std:first-child { border-color: var(--line-strong); color: var(--ink); }

.cap__list { display: flex; flex-direction: column; border-top: 1px solid var(--line); }
.cap__row {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 8px;
  padding-block: clamp(20px, 2.4vw, 28px);
  border-bottom: 1px solid var(--line);
  transition: background-color 0.4s, padding-left 0.4s var(--ease);
}
.cap__row:hover { background: rgba(255, 255, 255, 0.5); padding-left: 8px; }
.cap__num {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  color: var(--ink-mute);
  padding-top: 5px;
}
.cap__row h3 { font-size: 17px; font-weight: 600; letter-spacing: -0.01em; margin-bottom: 6px; }
.cap__row p { font-size: 13.5px; line-height: 1.8; color: var(--ink-soft); max-width: 46ch; }

/* ---------- 9. 流程 ---------- */
.process__grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: clamp(14px, 2vw, 28px);
  counter-reset: step;
}
.step {
  position: relative;
  padding-top: 22px;
  border-top: 1px solid var(--line-strong);
}
.step::before {
  content: "";
  position: absolute;
  top: -4px;
  left: 0;
  width: 7px;
  height: 7px;
  border: 1px solid var(--ink);
  border-radius: 50%;
  background: var(--paper);
}
.step__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--ink-mute);
  margin-bottom: 14px;
}
.step h3 { font-size: 17px; font-weight: 600; margin-bottom: 8px; letter-spacing: -0.005em; }
.step p { font-size: 13px; line-height: 1.8; color: var(--ink-soft); }
.step:hover .step__num { color: var(--ink); }

/* ---------- 10. 关于 ---------- */
.about__grid {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1fr);
  gap: clamp(32px, 6vw, 96px);
  align-items: start;
}
.about__brand { display: flex; flex-direction: column; }
.about__logo {
  position: relative;
  padding: clamp(22px, 3vw, 40px);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.72), rgba(255, 255, 255, 0.28));
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.about__logo::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--sp);
  opacity: 0.75;
}
.about__logos {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(14px, 2.4vw, 26px);
}
.about__logo-main { width: min(66%, 340px); height: auto; }
.about__logo-link {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-mute);
  line-height: 1;
}
.about__logo-parent { width: min(22%, 110px); height: auto; opacity: 0.9; }
.about__logo-caption {
  margin-top: 16px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.about__chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.chip {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  padding: 5px 11px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink-soft);
}
.about__linkline { margin-top: 18px; }
.about__text { display: flex; flex-direction: column; }
.about__text .section__title { margin-bottom: 26px; }
.about__text > p {
  font-size: 15px;
  line-height: 1.95;
  color: var(--ink-soft);
  max-width: 50ch;
  margin-bottom: 18px;
}
.about__text > p:first-of-type { color: var(--ink); }
.about__sign {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--ink);
}
.about__sign span { color: var(--ink-mute); }

/* ---------- 11. 联系 ---------- */
.contact { padding-bottom: clamp(72px, 10vw, 130px); }
.contact__inner {
  position: relative;
  overflow: hidden;
  padding: clamp(32px, 6vw, 80px);
  border-radius: clamp(20px, 3vw, 32px);
  background: var(--ink);
  color: var(--paper);
  isolation: isolate;
}
.contact__inner::before {
  content: "";
  position: absolute;
  z-index: -1;
  right: -18%;
  top: -40%;
  width: 62%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: conic-gradient(from 180deg, rgba(255, 59, 48, 0.5), rgba(255, 159, 10, 0.42), rgba(52, 199, 89, 0.3), rgba(10, 132, 255, 0.45), rgba(191, 90, 242, 0.5), rgba(255, 59, 48, 0.5));
  filter: blur(90px);
  opacity: 0.5;
}
.contact__inner::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image: radial-gradient(rgba(246, 244, 239, 0.14) 1px, transparent 1px);
  background-size: 24px 24px;
  -webkit-mask-image: radial-gradient(80% 70% at 80% 0%, #000, transparent 70%);
  mask-image: radial-gradient(80% 70% at 80% 0%, #000, transparent 70%);
}
.contact .section__kicker { color: rgba(246, 244, 239, 0.56); }
.contact .kicker__num { color: var(--paper); border-color: rgba(246, 244, 239, 0.24); }
.contact__title {
  font-size: clamp(34px, 5.4vw, 74px);
  line-height: 1.1;
  font-weight: 700;
  letter-spacing: -0.025em;
  margin-bottom: 22px;
}
.contact__desc {
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(246, 244, 239, 0.66);
}
.contact__actions { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; margin-top: clamp(28px, 4vw, 44px); }
.contact .btn--ink { background: var(--paper); color: var(--ink); }

.copybtn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  height: 52px;
  padding-inline: 20px;
  border: 1px solid rgba(246, 244, 239, 0.24);
  border-radius: 999px;
  transition: border-color 0.3s, background-color 0.3s, transform 0.3s var(--ease);
}
.copybtn:hover { border-color: rgba(246, 244, 239, 0.56); background: rgba(255, 255, 255, 0.05); transform: translateY(-2px); }
.copybtn__label { font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.14em; color: rgba(246, 244, 239, 0.56); text-transform: uppercase; }
.copybtn__value { font-size: 14.5px; font-weight: 600; letter-spacing: 0.06em; }
.copybtn__icon { width: 17px; height: 17px; color: rgba(246, 244, 239, 0.56); }
.copybtn__icon svg { width: 100%; height: 100%; }
.copybtn.is-copied { border-color: rgba(52, 199, 89, 0.6); }
.contact__note {
  margin-top: 20px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.06em;
  color: rgba(246, 244, 239, 0.54);
}

/* ---------- 11.5 合作伙伴（默认黑白，悬停弹起变彩色） ---------- */
.partners {
  border-top: 1px solid var(--line);
  padding-block: clamp(56px, 8vw, 96px) clamp(40px, 6vw, 64px);
}
.partners__inner { max-width: 1200px; margin-inline: auto; text-align: center; }
.partners .section__kicker { justify-content: center; }
.partners .section__title { font-size: clamp(30px, 4vw, 48px); }
.partners__row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: flex-start;
  gap: clamp(18px, 3.2vw, 46px);
  margin-top: clamp(56px, 7vw, 96px);
}
.partner {
  position: relative;
  display: block;
  width: clamp(104px, 10.5vw, 140px);
  min-height: 240px;
  outline: none;
  -webkit-tap-highlight-color: transparent;
}
.partner__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  transition: transform 0.45s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.partner__logo {
  width: clamp(58px, 6vw, 78px);
  height: clamp(58px, 6vw, 78px);
  display: grid;
  place-items: center;
}
.partner__logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: grayscale(1);
  opacity: 0.5;
  transition: filter 0.35s cubic-bezier(0.22, 0.61, 0.36, 1), opacity 0.35s cubic-bezier(0.22, 0.61, 0.36, 1), transform 0.42s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.partner__name {
  font-size: 13px;
  font-weight: 700;
  color: var(--ink-soft);
  letter-spacing: 0.02em;
  white-space: nowrap;
  transition: color 0.3s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.partner__desc {
  display: block;
  width: 100%;
  max-height: 150px;
  opacity: 0;
  overflow: hidden;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--ink-soft);
  text-align: center;
  letter-spacing: 0.01em;
  transform: translateY(6px);
  transition: opacity 0.3s cubic-bezier(0.22, 0.61, 0.36, 1), transform 0.3s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.partner:hover .partner__inner,
.partner:focus-visible .partner__inner { transform: translateY(-62px); }
.partner:hover .partner__logo img,
.partner:focus-visible .partner__logo img {
  filter: grayscale(0);
  opacity: 1;
  transform: translateY(-26px) scale(1.12);
}
.partner:hover .partner__name,
.partner:focus-visible .partner__name { color: var(--ink); }
.partner:hover .partner__desc,
.partner:focus-visible .partner__desc { opacity: 1; transform: translateY(0); }
.partner__socials {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-top: 4px;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height 0.38s cubic-bezier(0.22, 0.61, 0.36, 1), opacity 0.3s cubic-bezier(0.22, 0.61, 0.36, 1), margin 0.3s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.partner:hover .partner__socials,
.partner:focus-visible .partner__socials { max-height: 90px; opacity: 1; margin-top: 10px; }
.partner__social {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--paper-2);
  border: 1px solid var(--line);
  color: var(--ink-mute);
  cursor: pointer;
  padding: 0;
  font-family: inherit;
  transition: background-color 0.25s, color 0.25s, border-color 0.25s, transform 0.25s;
}
.partner__social svg { width: 17px; height: 17px; display: block; }
.partner__social:hover { background: var(--ink); color: var(--paper); border-color: var(--ink); transform: translateY(-2px); }
@media (max-width: 620px) {
  .partners__row {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 26px 16px;
    margin-top: 48px;
  }
  .partner { width: auto; min-height: 0; }
  .partner__name { white-space: normal; }
  .partner:last-child:nth-child(odd) { grid-column: 1 / -1; justify-self: center; }
}
/* 触屏没有 hover：直接展示彩色 Logo、简介与社交图标 */
/* 触屏：默认保持黑白，点按卡片才展开（与桌面悬停一致） */
@media (hover: none) {
  .partner.is-open .partner__inner { transform: translateY(-62px); }
  .partner.is-open .partner__logo img {
    filter: grayscale(0);
    opacity: 1;
    transform: translateY(-26px) scale(1.12);
  }
  .partner.is-open .partner__name { color: var(--ink); }
  .partner.is-open .partner__desc { opacity: 1; transform: translateY(0); }
  .partner.is-open .partner__socials { max-height: 90px; opacity: 1; margin-top: 10px; }
}

/* ---------- 11.6 多端（电脑 / 平板 / 手机 / 手表，SVG 模型） ---------- */
.devices { background: var(--paper); overflow: hidden; }
.devices .section__head { max-width: 780px; }
.devices__stage {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(14px, 2.2vw, 38px);
  margin-top: clamp(34px, 5vw, 64px);
  padding-inline: var(--pad);
}
.device { margin: 0; flex: none; }
.dev-svg {
  display: block;
  width: 100%;
  height: auto;
  filter: drop-shadow(0 26px 34px rgba(14, 14, 15, 0.16));
}
.device figcaption {
  margin-top: 16px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.device--watch { width: clamp(92px, 8.4vw, 118px); margin-top: clamp(26px, 4.4vw, 60px); }
.device--mac { width: min(600px, 44vw); }
.device--ipad { width: clamp(150px, 15vw, 218px); margin-top: clamp(6px, 1.6vw, 18px); }
.device--phone { width: clamp(116px, 10.5vw, 148px); margin-top: clamp(14px, 2.6vw, 34px); }

@media (prefers-reduced-motion: no-preference) {
  .device--mac { animation: devFloat 7.2s ease-in-out infinite; }
  .device--ipad { animation: devFloat 6.4s ease-in-out infinite 0.25s; }
  .device--phone { animation: devFloat 5.8s ease-in-out infinite 0.5s; }
  .device--watch { animation: devFloat 6.8s ease-in-out infinite 0.9s; }
}
@keyframes devFloat {
  50% { transform: translateY(-6px); }
}

@media (max-width: 1080px) {
  .devices__stage { gap: 16px; }
  .device--mac { width: 47vw; }
  .device--ipad { width: 16vw; }
  .device--phone { width: 12.5vw; }
  .device--watch { width: 9vw; }
}
@media (max-width: 820px) {
  .devices__stage {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    grid-template-areas:
      "mac mac"
      "ipad phone"
      "watch watch";
    justify-items: center;
    gap: 30px 16px;
    padding-inline: var(--pad);
  }
  .device--mac { grid-area: mac; width: min(600px, 92vw); }
  .device--ipad { grid-area: ipad; justify-self: end; width: 158px; margin-top: 0; }
  .device--phone { grid-area: phone; justify-self: start; width: 118px; margin-top: 0; }
  .device--watch { grid-area: watch; justify-self: center; width: 100px; margin-top: 0; }
}

/* ---------- 12. 页脚 ---------- */
.footer {
  border-top: 1px solid var(--line);
  padding-block: clamp(40px, 5vw, 60px) clamp(24px, 3vw, 34px);
}
.footer__top {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: clamp(24px, 5vw, 64px);
  padding-bottom: clamp(28px, 4vw, 44px);
}
.footer__brand { max-width: 380px; }
.footer__mark { display: block; width: 34px; height: 24px; margin-bottom: 14px; }
.footer__mark img { width: 100%; height: auto; display: block; }
.footer__name { font-size: 15px; font-weight: 700; letter-spacing: 0.02em; }
.footer__name span {
  display: block;
  font-family: var(--font-mono);
  font-size: 8.5px;
  font-weight: 400;
  letter-spacing: 0.18em;
  color: var(--ink-mute);
  margin-top: 5px;
}
.footer__soft { font-size: 12px; color: var(--ink-soft); margin-top: 12px; }
.footer__links { display: flex; flex-wrap: wrap; align-content: flex-start; gap: 10px 26px; }
.footer__links a { font-size: 13px; color: var(--ink-soft); padding-block: 5px; transition: color 0.25s; }
.footer__links a:hover { color: var(--ink); }
.footer__aside { display: flex; flex-direction: column; align-items: flex-start; gap: 10px; font-size: 12.5px; color: var(--ink-soft); }
.footer__aside strong { font-weight: 600; letter-spacing: 0.04em; }
.footer__replay {
  padding-block: 5px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  color: var(--ink-mute);
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: color 0.25s, border-color 0.25s;
}
.footer__replay:hover { color: var(--ink); border-color: var(--line-strong); }
.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  color: var(--ink-mute);
}
.footer__meta { text-align: right; }

/* ---------- 13. 滚动构建（光标群现场制作） ---------- */
/* 引擎初始化后给 <html> 加 build-ready：未构建区块的元素先隐藏（仅视觉，不塌陷布局） */
html.build-ready [data-build-section]:not([data-built]) [data-swarm] {
  opacity: 0;
  transform: translateY(16px);
}
html.build-ready [data-build-section]:not([data-built]) [data-swarm].is-built {
  opacity: 1;
  transform: none;
  filter: none;
  transition: opacity 0.5s var(--ease), transform 0.6s var(--ease);
}
/* 打字元素保持可读，字符由 .sw-char 控制 */
html.build-ready [data-build-section]:not([data-built]) [data-swarm-type="type"] {
  opacity: 1;
  transform: none;
  filter: none;
}
html.build-ready [data-build-section]:not([data-built]) .sw-char { opacity: 0; }
html.build-ready [data-build-section]:not([data-built]) .sw-char.is-typed { opacity: 1; }
html.build-ready [data-build-section].is-building .sw-char { opacity: 0; }
html.build-ready [data-build-section].is-building .sw-char.is-typed { opacity: 1; }
/* 区块构建完成后所有元素兜底可见 */
html.build-ready [data-build-section][data-built] [data-swarm],
html.build-ready [data-build-section][data-built] [data-swarm].is-built {
  opacity: 1;
  transform: none;
  filter: none;
}
/* 构建中属性不需要额外视觉，仅保留钩子 */

/* ---------- 14. 光标群动画协议 ---------- */
#swarmCanvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 72;
  pointer-events: none;
  display: block;
}
html.swarm-done:not(.is-swarming) #swarmCanvas { display: none; }

body.swarm-lock { overflow: hidden; }

html.is-swarming [data-swarm] {
  opacity: 0;
  transform: translateY(14px);
}
html.is-swarming [data-swarm].is-built {
  opacity: 1;
  transform: none;
  filter: none;
  transition: opacity 0.55s var(--ease), transform 0.6s var(--ease);
}
html.is-swarming [data-swarm-type="type"] { opacity: 1; transform: none; filter: none; }

.sw-char { display: inline-block; opacity: 1; transition: opacity 0.16s linear; }
html.is-swarming .sw-char { opacity: 0; }
html.is-swarming .sw-char.is-typed { opacity: 1; }

/* 钢笔：标识描边 */
.hero__mark .mark__orbit ellipse,
.hero__mark .mark__brackets path,
.hero__mark .mark__power circle,
.hero__mark .mark__power path { stroke-dasharray: 1; stroke-dashoffset: 0; }
html.is-swarming .hero__mark .mark__orbit ellipse,
html.is-swarming .hero__mark .mark__brackets path,
html.is-swarming .hero__mark .mark__power circle,
html.is-swarming .hero__mark .mark__power path { stroke-dashoffset: 1; }
html.is-swarming .hero__mark.is-built .mark__orbit ellipse,
html.is-swarming .hero__mark.is-built .mark__brackets path,
html.is-swarming .hero__mark.is-built .mark__power circle,
html.is-swarming .hero__mark.is-built .mark__power path {
  stroke-dashoffset: 0;
  transition: stroke-dashoffset 1.5s var(--ease);
}
html.is-swarming .hero__mark .mark__nodes,
html.is-swarming .hero__mark .mark__star,
html.is-swarming .hero__mark .mark__pixels { opacity: 0; }
html.is-swarming .hero__mark.is-built .mark__nodes,
html.is-swarming .hero__mark.is-built .mark__star,
html.is-swarming .hero__mark.is-built .mark__pixels { opacity: 1; transition: opacity 0.8s var(--ease) 0.5s; }

/* HUD */
.swarm-hud {
  position: fixed;
  left: 50%;
  bottom: calc(22px + env(safe-area-inset-bottom));
  z-index: 76;
  width: min(92vw, 430px);
  padding: 13px 15px 12px;
  border-radius: 14px;
  background: rgba(14, 14, 15, 0.9);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  backdrop-filter: blur(14px) saturate(140%);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--paper);
  font-family: var(--font-mono);
  opacity: 0;
  visibility: hidden;
  transform: translateX(-50%) translateY(12px);
  transition: opacity 0.4s var(--ease), transform 0.5s var(--ease), visibility 0.4s;
}
html.is-swarming .swarm-hud { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
html.swarm-done:not(.is-swarming) .swarm-hud { opacity: 0; visibility: hidden; }
.swarm-hud__top { display: flex; align-items: center; gap: 10px; font-size: 10px; letter-spacing: 0.1em; }
.swarm-hud__live { display: inline-flex; align-items: center; gap: 6px; color: var(--sp-green); }
.swarm-hud__live i { width: 5px; height: 5px; border-radius: 50%; background: var(--sp-green); animation: live 1.4s ease-in-out infinite; }
@keyframes live { 50% { opacity: 0.25; } }
.swarm-hud__step { color: rgba(246, 244, 239, 0.72); letter-spacing: 0.06em; }
.swarm-hud__pct { margin-left: auto; color: var(--paper); font-variant-numeric: tabular-nums; }
.swarm-hud__track { height: 3px; margin: 10px 0 0; border-radius: 3px; background: rgba(246, 244, 239, 0.14); overflow: hidden; }
.swarm-hud__track i { display: block; width: 0%; height: 100%; background: var(--sp); transition: width 0.3s linear; }
.swarm-hud__bottom { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-top: 9px; }
.swarm-hud__hint { font-size: 9px; letter-spacing: 0.06em; color: rgba(246, 244, 239, 0.54); }
.swarm-hud__skip {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.08em;
  color: var(--paper);
  border: 1px solid rgba(246, 244, 239, 0.24);
  border-radius: 999px;
  padding: 4px 11px;
  transition: background-color 0.25s, border-color 0.25s;
}
.swarm-hud__skip:hover { background: rgba(246, 244, 239, 0.1); border-color: rgba(246, 244, 239, 0.56); }

/* 滚动构建状态胶囊 */
.build-chip {
  position: fixed;
  right: var(--pad);
  bottom: calc(22px + env(safe-area-inset-bottom));
  z-index: 78;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 13px;
  border-radius: 999px;
  background: rgba(14, 14, 15, 0.9);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.3s, transform 0.35s var(--ease);
  pointer-events: none;
}
.build-chip.is-on { opacity: 1; transform: none; }
.build-chip i { width: 5px; height: 5px; border-radius: 50%; background: var(--sp-green); animation: live 1.4s ease-in-out infinite; }

/* ---------- 15. Toast ---------- */
.toast {
  position: fixed;
  left: 50%;
  bottom: calc(26px + env(safe-area-inset-bottom));

  z-index: 90;
  translate: -50% 18px;
  padding: 11px 20px;
  border-radius: 999px;
  background: var(--ink);
  color: var(--paper);
  font-size: 12.5px;
  letter-spacing: 0.02em;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s, translate 0.4s var(--ease), visibility 0.3s;
}
.toast.is-on { opacity: 1; visibility: visible; translate: -50% 0; }

/* ---------- 16. 响应式 ---------- */
@media (max-width: 1080px) {
  .hero__inner {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas:
      "eyebrow"
      "title"
      "en"
      "row"
      "meta"
      "mark";
  }
  .hero__mark {
    display: block;
    width: min(72vw, 320px);
    margin: clamp(22px, 5vw, 34px) auto 0;
  }
  .hero__title { font-size: clamp(56px, 11vw, 110px); }
  .cap__grid { grid-template-columns: minmax(0, 1fr); }
  .cap__left { position: static; }
  .process__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 30px; }
  .about__grid { grid-template-columns: minmax(0, 1fr); }
  .about__logo { max-width: 460px; }
}

@media (max-width: 900px) {
  :root { --nav-h: 64px; }
  .nav__links, .nav__cta { display: none; }
  .nav__brand { padding-block: 7px; }
  .nav__toggle { display: block; }
  .nav__word i { display: none; }
  .case { grid-template-columns: minmax(0, 1fr); gap: 20px; }
  .case__visual { max-width: 520px; }
  .services__grid { grid-template-columns: minmax(0, 1fr); }
  .hero { padding-top: calc(var(--nav-h) + 24px); }
  .hero__row { flex-direction: column; align-items: flex-start; gap: 22px; }
  .hero__meta { grid-template-columns: minmax(0, 1fr); gap: 12px; }
  .hero__meta div { display: flex; gap: 12px; align-items: baseline; }
  .hero__meta dt { min-width: 44px; margin-bottom: 0; }
  .hero__scroll, .artboard__tag, .artboard__ruler { display: none; }
  .footer__meta { text-align: left; }
}

@media (max-width: 640px) {
  .hero__title { font-size: clamp(48px, 15.5vw, 76px); letter-spacing: -0.035em; }
  .hero__cta { width: 100%; }
  .hero__cta .btn { flex: 1; min-width: 0; padding-inline: 14px; }
  .hero__desc { max-width: none; }
  .process__grid { grid-template-columns: minmax(0, 1fr); gap: 22px; }
  .case__foot { gap: 10px; }
  .hero__eyebrow { letter-spacing: 0.12em; }
  .hero__eyebrow .sep { display: none; }
  .artboard { display: none; }
  .contact__actions .btn, .contact__actions .copybtn { width: 100%; justify-content: center; }
  .footer__top { flex-direction: column; gap: 26px; }
  .swarm-hud { bottom: calc(14px + env(safe-area-inset-bottom)); }
}

/* ---------- 17. 动效偏好 / 无 JS 兜底 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  html.build-ready [data-build-section] [data-swarm], html.build-ready [data-build-section] [data-swarm].is-built { opacity: 1 !important; transform: none !important; filter: none !important; }
  .sw-char { opacity: 1 !important; }
  html.is-swarming [data-swarm] { opacity: 1; transform: none; filter: none; }
  .sw-char { opacity: 1 !important; }
  #swarmCanvas, .swarm-hud { display: none !important; }
}

@media (prefers-contrast: more) {
  :root {
    --ink-soft: rgba(14, 14, 15, 0.82);
    --ink-mute: rgba(14, 14, 15, 0.66);
    --line: rgba(14, 14, 15, 0.28);
  }
}

/* 打印 */
@media print {
  .nav, .menu, .swarm-hud, #swarmCanvas, .toast, .hero__scroll { display: none !important; }
  body { background: #fff; }
  .work, .contact__inner { background: #fff !important; color: #000 !important; }
  [data-swarm], .sw-char { opacity: 1 !important; transform: none !important; filter: none !important; }
}