:root {
  --bg: #fbf4f6;
  --bg-1: #ffffff;
  --surface: #ffffff;
  --text: #2b1620;
  --text-2: #74606a;
  --text-3: #a896a0;
  --accent: #d93a5e;          /* 主色：玫红 */
  --accent-2: #f06292;        /* 辅色：粉红 */
  --accent-soft: #e8557a;
  --border: rgba(217, 58, 94, 0.18);
  --glass: rgba(255, 255, 255, 0.66);
  --shadow: 0 14px 44px rgba(210, 60, 90, 0.16);
  --grad: linear-gradient(120deg, #d93a5e, #f06292);
  --grad-soft: linear-gradient(120deg, #fbe2e8, #fde7ee);
  --glow: radial-gradient(circle, rgba(217, 58, 94, 0.4), transparent 62%);
  --radius: 18px;
  --radius-lg: 28px;
  --maxw: 1140px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --flute-dark: rgba(0, 0, 0, 0.06);
  --flute-light: rgba(255, 255, 255, 0.5);
  color-scheme: light;
}
/* ---------- 主题变量：深色（深红夜 + 玫粉辉光） ---------- */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #1c0d12; --bg-1: #261018; --surface: #2e141e; --text: #f7eef1;
    --text-2: #dcc6ce; --text-3: #a08590; --accent: #ee4d74; --accent-2: #f67fa6;
    --accent-soft: #f06a90; --border: rgba(238, 77, 116, 0.24); --glass: rgba(28, 13, 18, 0.6);
    --shadow: 0 18px 50px rgba(0, 0, 0, 0.5); --grad: linear-gradient(120deg, #e03560, #f67fa6);
    --grad-soft: linear-gradient(120deg, #3a1622, #451c2e);     --glow: radial-gradient(circle, rgba(224, 53, 96, 0.5), transparent 62%);
    --flute-dark: rgba(255, 255, 255, 0.10);
    --flute-light: rgba(255, 255, 255, 0.05);
    color-scheme: dark;
  }
}
[data-theme="dark"] {
  --bg: #1c0d12; --bg-1: #261018; --surface: #2e141e; --text: #f7eef1;
  --text-2: #dcc6ce; --text-3: #a08590; --accent: #ee4d74; --accent-2: #f67fa6;
  --accent-soft: #f06a90; --border: rgba(238, 77, 116, 0.24); --glass: rgba(28, 13, 18, 0.6);
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.5); --grad: linear-gradient(120deg, #e03560, #f67fa6);
  --grad-soft: linear-gradient(120deg, #3a1622, #451c2e); --glow: radial-gradient(circle, rgba(224, 53, 96, 0.5), transparent 62%);
  --flute-dark: rgba(255, 255, 255, 0.10);
  --flute-light: rgba(255, 255, 255, 0.05);
  color-scheme: dark;
}
[data-theme="light"] {
  --bg: #fbf4f6; --bg-1: #ffffff; --surface: #ffffff; --text: #2b1620;
  --text-2: #74606a; --text-3: #a896a0; --accent: #d93a5e; --accent-2: #f06292;
  --accent-soft: #e8557a; --border: rgba(217, 58, 94, 0.18); --glass: rgba(255, 255, 255, 0.66);
  --shadow: 0 14px 44px rgba(210, 60, 90, 0.16); --grad: linear-gradient(120deg, #d93a5e, #f06292);
  --grad-soft: linear-gradient(120deg, #fbe2e8, #fde7ee); --glow: radial-gradient(circle, rgba(217, 58, 94, 0.4), transparent 62%);
  color-scheme: light;
}

/* ---------- 基础重置 ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
html { background: var(--bg); }
body { font-family: -apple-system, "PingFang SC", "Helvetica Neue", "Microsoft YaHei", system-ui, sans-serif; background: transparent; color: var(--text); line-height: 1.6; letter-spacing: 0.01em; -webkit-font-smoothing: antialiased; transition: color 0.5s var(--ease); overflow-x: hidden; }

/* ---------- 3D 纵深背景（全站固定） ---------- */
.im-bg3d { position: fixed; inset: 0; width: 100%; height: 100%; z-index: -2; display: block; }
.im-noise {
  position: fixed; inset: -50%; z-index: 90; pointer-events: none;
  width: 200%; height: 200%; opacity: 0.05; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
  animation: noiseShift 0.6s steps(4) infinite;
}
/* ---------- 长虹玻璃：竖向磨砂棱纹 + 模糊（覆盖在 3D 背景之上、内容之下） ---------- */
.im-fluted-glass {
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  -webkit-backdrop-filter: blur(4px) saturate(118%);
  backdrop-filter: blur(4px) saturate(118%);
  /* 竖向棱纹：每 12px 一条细暗纹 + 偏置高光，模拟长虹玻璃竖条 */
  background-image:
    repeating-linear-gradient(90deg, var(--flute-dark) 0 1.5px, transparent 1.5px 12px),
    repeating-linear-gradient(90deg, var(--flute-light) 5px, transparent 5px 12px);
  /* 四周暗角，聚焦中心网格 */
  box-shadow: inset 0 0 220px rgba(0, 0, 0, 0.22);
}

@keyframes noiseShift {
  0% { transform: translate(0, 0); }
  25% { transform: translate(-3%, 2%); }
  50% { transform: translate(2%, -2%); }
  75% { transform: translate(-2%, -3%); }
  100% { transform: translate(3%, 1%); }
}
@media (prefers-reduced-motion: reduce) {
  .im-noise { animation: none; }
}
body.is-loading { overflow: hidden; }
.im-main-wrap { opacity: 1; transition: opacity 0.6s var(--ease), transform 0.6s var(--ease); }
body.is-loading .im-main-wrap { opacity: 0; transform: scale(0.995); }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
i { font-style: normal; opacity: 0.5; font-weight: 400; font-size: 0.62em; letter-spacing: 0.12em; text-transform: uppercase; }
.im-container { width: min(100% - 40px, var(--maxw)); margin-inline: auto; }

/* ---------- reveal ---------- */
.im-reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.9s var(--ease), transform 0.9s var(--ease); }
.im-reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .im-reveal { opacity: 1; transform: none; transition: none; } html { scroll-behavior: auto; } }

/* ---------- 渐变文字 ---------- */
.im-grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; color: transparent; }

.im-nav { position: fixed; inset: 0 0 auto 0; z-index: 50; border-bottom: 1px solid transparent; transition: background 0.4s var(--ease), border-color 0.4s var(--ease), backdrop-filter 0.4s; }
.im-nav.scrolled { background: var(--glass); backdrop-filter: saturate(180%) blur(20px); -webkit-backdrop-filter: saturate(180%) blur(20px); border-bottom-color: var(--border); }
.im-nav__inner { width: min(100% - 40px, var(--maxw)); margin-inline: auto; height: 64px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.im-nav__logo { display: flex; align-items: center; gap: 10px; font-weight: 800; letter-spacing: 0.02em; }
.im-nav__logo-mark { width: 24px; height: 24px;position: relative; }
.im-nav__logo-text em { font-style: normal; font-weight: 400; opacity: 0.55; margin-left: 4px; letter-spacing: 0.12em; font-size: 0.62em; }
.im-nav__links { display: flex; gap: 30px; }
.im-nav__link { font-size: 15px; position: relative; padding: 6px 0; color: var(--text-2); transition: color 0.3s; font-weight: 500; }
.im-nav__link:hover, .im-nav__link.is-active { color: var(--text); }
.im-nav__link::after { content: ""; position: absolute; left: 0; bottom: 0; width: 0; height: 2px; background: var(--grad); transition: width 0.35s var(--ease); border-radius: 2px; }
.im-nav__link:hover::after, .im-nav__link.is-active::after { width: 100%; }
.im-nav__actions { display: flex; align-items: center; gap: 14px; }
.im-theme-toggle { background: none; border: 0; cursor: pointer; padding: 4px; }
.im-theme-toggle__track { width: 46px; height: 26px; border-radius: 20px; background: var(--surface); border: 1px solid var(--border); display: flex; align-items: center; padding: 2px; transition: background 0.4s; }
.im-theme-toggle__thumb { width: 20px; height: 20px; border-radius: 50%; background: var(--grad); transform: translateX(0); transition: transform 0.4s var(--ease); box-shadow: 0 2px 8px rgba(0,0,0,0.25); }
[data-theme="dark"] .im-theme-toggle__thumb, :root:not([data-theme="light"]) .im-theme-toggle__thumb { transform: translateX(20px); }
.im-nav__menu-btn { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: 8px; }
.im-nav__menu-btn span { width: 22px; height: 2px; background: var(--text); border-radius: 2px; transition: 0.3s; }
.im-mobile-menu { position: fixed; top: 64px; left: 0; right: 0; z-index: 49; background: var(--glass); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); border-bottom: 1px solid var(--border); display: flex; flex-direction: column; padding: 12px 20px 22px; transform: translateY(-12px); opacity: 0; pointer-events: none; transition: 0.35s var(--ease); }
.im-mobile-menu.open { transform: none; opacity: 1; pointer-events: auto; }
.im-mobile-menu__link { padding: 14px 4px; font-size: 18px; border-bottom: 1px solid var(--border); color: var(--text); font-weight: 500; }

.im-hero { position: relative; min-height: 100svh; display: flex; align-items: center; overflow: hidden; }
.im-hero__bg { position: absolute; inset: 0; z-index: 0; }
.im-hero__bg-grid { position: absolute; inset: 0; background-image: linear-gradient(var(--border) 1px, transparent 1px), linear-gradient(90deg, var(--border) 1px, transparent 1px); background-size: 58px 58px; -webkit-mask-image: radial-gradient(circle at 50% 42%, #000 0%, transparent 74%); mask-image: radial-gradient(circle at 50% 42%, #000 0%, transparent 74%); opacity: 0.55; }
.im-hero__glow { position: absolute; width: 560px; height: 560px; border-radius: 50%; background: var(--glow); filter: blur(10px); pointer-events: none; transform: translate(-50%, -50%); transition: opacity 0.4s; left: 50%; top: 46%; }
.im-hero__orb { position: absolute; border-radius: 50%; filter: blur(46px); opacity: 0.55; }
.im-hero__orb--1 { width: 320px; height: 320px; background: radial-gradient(circle, rgba(217,58,94,0.55), transparent 70%); top: 8%; left: -4%; animation: float1 13s ease-in-out infinite; }
.im-hero__orb--2 { width: 260px; height: 260px; background: radial-gradient(circle, rgba(240,98,146,0.5), transparent 70%); bottom: 6%; right: -2%; animation: float2 16s ease-in-out infinite; }
@keyframes float1 { 0%,100% { transform: translate(0,0); } 50% { transform: translate(30px, 36px); } }
@keyframes float2 { 0%,100% { transform: translate(0,0); } 50% { transform: translate(-26px, -30px); } }
.im-hero__content { position: relative; z-index: 1; width: min(100% - 40px, var(--maxw)); margin-inline: auto; padding-top: 56px; }
.im-hero__eyebrow { font-size: 13px; letter-spacing: 0.28em; text-transform: uppercase; color: var(--accent); margin-bottom: 22px; font-weight: 600; }
.im-hero__title { font-size: clamp(52px, 11vw, 118px); font-weight: 800; line-height: 1.0; letter-spacing: -0.035em; margin-bottom: 26px; max-width: 15ch; text-shadow: 0 4px 40px rgba(0,0,0,0.35); }
.im-hero__sub { font-size: clamp(16px, 2.2vw, 20px); color: var(--text-2); max-width: 56ch; margin-bottom: 10px; }
.im-hero__sub--en { font-size: clamp(13px, 1.6vw, 15px); color: var(--text-3); }
.im-hero__slogan { font-size: clamp(15px, 2vw, 19px); font-weight: 800; letter-spacing: 0.18em; color: var(--accent); margin-top: 24px; }
.im-hero__slogan { font-size: clamp(15px, 2vw, 19px); font-weight: 800; letter-spacing: 0.18em; color: var(--accent); margin-top: 24px; }
.im-hero__cta { display: flex; gap: 14px; margin-top: 34px; flex-wrap: wrap; }
.im-hero__badges { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 30px; }
.im-badge { font-size: 13px; font-weight: 600; padding: 7px 16px; border-radius: 100px; background: var(--glass); border: 1px solid var(--border); color: var(--text-2); backdrop-filter: blur(8px); }
.im-btn { display: inline-flex; align-items: center; gap: 8px; padding: 13px 28px; border-radius: 100px; font-size: 15px; font-weight: 700; cursor: pointer; border: 1px solid transparent; transition: transform 0.3s var(--ease), box-shadow 0.3s, background 0.3s; will-change: transform; }
.im-btn:hover { transform: translateY(-2px); }
.im-btn--primary { background: var(--grad); color: #fff; box-shadow: 0 12px 32px rgba(217, 58, 94, 0.4); }
.btn--ghost { border-color: var(--border); color: var(--text); background: var(--glass); backdrop-filter: blur(10px); }
.btn--ghost:hover { border-color: var(--accent); }
.im-hero__scroll { position: absolute; bottom: 28px; left: 50%; transform: translateX(-50%); z-index: 1; display: flex; flex-direction: column; align-items: center; gap: 8px; color: var(--text-3); font-size: 11px; letter-spacing: 0.3em; }
.im-hero__scroll-dot { width: 22px; height: 36px; border: 1px solid var(--border); border-radius: 14px; position: relative; }
.im-hero__scroll-dot::after { content: ""; position: absolute; top: 6px; left: 50%; transform: translateX(-50%); width: 4px; height: 8px; border-radius: 4px; background: var(--accent); animation: scrolldot 1.8s var(--ease) infinite; }
@keyframes scrolldot { 0% { opacity: 0; top: 6px; } 40% { opacity: 1; } 80% { opacity: 0; top: 22px; } 100% { opacity: 0; } }

/* ---------- 关键词跑马灯（PPT 风格） ---------- */
.im-marquee { overflow: hidden; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); padding: 26px 0; background: var(--grad-soft); }
.im-marquee__track { display: flex; white-space: nowrap; width: max-content; animation: marquee 26s linear infinite; }
.im-marquee__track span { font-size: clamp(34px, 6vw, 68px); font-weight: 800; letter-spacing: -0.02em; padding: 0 38px; -webkit-text-fill-color: transparent; -webkit-background-clip: text; background-clip: text; background-image: var(--grad); position: relative; }
.im-marquee__track span::after { content: "✦"; position: absolute; right: -6px; top: 50%; transform: translateY(-50%); -webkit-text-fill-color: var(--accent); font-size: 0.28em; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* =========================================================
   区块通用
   ========================================================= */
.im-section { padding: clamp(80px, 12vw, 160px) 0; }
.im-section__head { display: flex; align-items: baseline; gap: 18px; margin-bottom: 48px; }
.im-section__index { font-size: 14px; font-weight: 800; color: var(--accent); letter-spacing: 0.1em; }
.im-section__title { font-size: clamp(30px, 5vw, 54px); font-weight: 800; letter-spacing: -0.02em; }
.im-section__title i { display: inline-block; margin-left: 8px; }
.im-block { margin-top: clamp(48px, 7vw, 90px); }
.im-block__title { font-size: clamp(20px, 3vw, 28px); font-weight: 700; margin-bottom: 28px; letter-spacing: -0.01em; }
.im-services__desc { color: var(--text-2); max-width: 60ch; margin: -28px 0 40px; }

/* ---------- 关于 About ---------- */
.im-about__intro { display: grid; grid-template-columns: 240px 1fr; gap: clamp(28px, 5vw, 56px); align-items: center; }
.im-about__brand { display: flex; flex-direction: column; align-items: center; gap: 16px; text-align: center; }
.im-about__brand-mark { width: 110px; height: 110px; border-radius: 26px; background: var(--grad); display: flex; align-items: center; justify-content: center; color: #fff; font-size: 52px; font-weight: 800; box-shadow: 0 14px 40px rgba(217, 58, 94, 0.4); }
.im-about__brand-name { font-size: 18px; font-weight: 700; line-height: 1.3; }
.im-about__brand-name span { font-size: 12px; letter-spacing: 0.2em; color: var(--accent); font-weight: 600; }
.im-about__lead-cn { font-size: clamp(18px, 2.4vw, 23px); line-height: 1.7; font-weight: 500; }
.im-about__lead-en { color: var(--text-3); margin-top: 14px; font-size: 15px; }
.im-about__detail p { color: var(--text-2); font-size: 15px; line-height: 1.85; margin-bottom: 14px; max-width: 72ch; }

/* 数据亮点 */
.im-stats { list-style: none; display: flex; gap: clamp(20px, 5vw, 56px); margin-top: 48px; flex-wrap: wrap; }
.im-stats__item { display: flex; flex-direction: column; }
.im-stats__item b { font-size: clamp(36px, 5vw, 56px); font-weight: 800; letter-spacing: -0.02em; line-height: 1; background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.im-stats__item span { color: var(--text-2); font-size: 14px; margin-top: 10px; font-weight: 500; }

.im-about__vm { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(16px, 2.4vw, 26px); }
.im-about__vm-card { padding: 30px 28px; border-radius: var(--radius-lg); border: 1px solid var(--border); background: var(--surface); transition: transform 0.4s var(--ease), box-shadow 0.4s, border-color 0.3s; }
.im-about__vm-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: color-mix(in srgb, var(--accent) 45%, var(--border)); }
.im-about__vm-card h4 { font-size: 20px; font-weight: 700; margin-bottom: 12px; display: flex; align-items: center; gap: 10px; }
.im-about__vm-card h4::before { content: ""; width: 10px; height: 10px; border-radius: 50%; background: var(--grad); flex: none; }
.im-about__vm-card p { color: var(--text-2); font-size: 15px; line-height: 1.75; }

.philosophy__quote { font-size: clamp(26px, 4.6vw, 52px); font-weight: 800; line-height: 1.3; letter-spacing: -0.02em; border-left: 4px solid transparent; border-image: var(--grad) 1; padding-left: 28px; max-width: 22ch; }
.philosophy__quote cite { display: block; margin-top: 22px; font-size: 15px; font-weight: 600; font-style: normal; color: var(--accent); letter-spacing: 0.06em; }

.im-services__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(16px, 2.2vw, 26px); }
.im-svc-card { position: relative; border-radius: var(--radius-lg); border: 1px solid var(--border); background: var(--surface); overflow: hidden; transition: transform 0.45s cubic-bezier(0.22,1,0.36,1), box-shadow 0.45s, border-color 0.35s; padding: 34px 30px 32px; }
.im-svc-card::before { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 4px; background: var(--grad); transform: scaleX(0); transform-origin: left; transition: transform 0.5s var(--ease); }
.im-svc-card:hover { transform: translateY(-8px); box-shadow: 0 24px 56px rgba(210, 60, 90, 0.16); border-color: color-mix(in srgb, var(--accent) 45%, var(--border)); }
.im-svc-card:hover::before { transform: scaleX(1); }
.im-svc-card__icon { width: 58px; height: 58px; border-radius: 16px; background: var(--grad-soft); display: flex; align-items: center; justify-content: center; color: var(--accent); margin-bottom: 22px; border: 1px solid var(--border); }
.im-svc-card__icon svg { width: 30px; height: 30px; }
.im-svc-card__title { font-size: 22px; font-weight: 800; letter-spacing: -0.01em; display: flex; align-items: baseline; gap: 8px; }
.im-svc-card__title i { font-weight: 600; }
.im-svc-card__desc { color: var(--text-2); font-size: 15px; margin: 14px 0 16px; line-height: 1.75; }
.im-svc-card__tags { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; }
.im-svc-card__tags li { font-size: 12px; padding: 5px 12px; border-radius: 100px; border: 1px solid var(--border); color: var(--text-2); background: var(--bg-1); }

.im-bigstatement { display: flex; flex-direction: column; gap: clamp(4px, 1vw, 10px); }
.im-bigstatement__line { font-size: clamp(40px, 9vw, 104px); font-weight: 800; line-height: 1.0; letter-spacing: -0.04em; }

/* 流程 */
.im-process { display: grid; grid-template-columns: repeat(4, 1fr); gap: clamp(14px, 2vw, 22px); }
.im-process__step { padding: 26px 22px; border-radius: var(--radius); border: 1px solid var(--border); background: var(--surface); }
.im-process__num { font-size: 30px; font-weight: 800; background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.im-process__step h4 { font-size: 17px; font-weight: 700; margin: 10px 0 6px; }
.im-process__step p { color: var(--text-2); font-size: 14px; }

.im-contact__inner { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(28px, 5vw, 60px); align-items: start; }
.im-contact__lead h3 { font-size: clamp(28px, 4.4vw, 48px); font-weight: 800; line-height: 1.18; letter-spacing: -0.02em; }
.im-contact__lead p { color: var(--text-2); margin-top: 18px; max-width: 44ch; }
.im-contact__en { color: var(--text-3); font-size: 14px; }
.im-contact__slogan { display: flex; flex-direction: column; gap: 4px; margin-top: 24px; }
.im-contact__slogan-line { font-size: clamp(20px, 3vw, 30px); font-weight: 800; letter-spacing: 0.04em; background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.im-contact__cards { display: flex; flex-direction: column; gap: 14px; }
.contact__cards--single { justify-content: center; min-height: 320px; }
.contact__cards--single .im-contact__card { flex: 1; justify-content: center; min-height: 260px; }
.im-contact__card { position: relative; display: flex; flex-direction: column; gap: 4px; padding: 20px 22px; border-radius: var(--radius); border: 1px solid var(--border); background: var(--surface); transition: transform 0.35s var(--ease), border-color 0.35s, box-shadow 0.35s; }
.im-contact__card:hover { transform: translateY(-3px); border-color: var(--accent); box-shadow: var(--shadow); }
.im-contact__label { font-size: 12px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--accent); font-weight: 700; }
.im-contact__value { font-size: 19px; font-weight: 700; word-break: break-all; }
.im-contact__value--sm { font-size: 15px; font-weight: 600; line-height: 1.5; }
.im-contact__value--lg { font-size: clamp(22px, 3vw, 30px); font-weight: 800; letter-spacing: 0.02em; color: var(--text); text-decoration: none; transition: color 0.3s; }
.im-contact__value--lg:hover { color: var(--accent); }
.im-contact__hint { font-size: 12px; color: var(--text-3); }
.im-contact__copy { position: absolute; top: 18px; right: 18px; font-size: 12px; padding: 6px 12px; border-radius: 100px; border: 1px solid var(--border); background: var(--bg-1); color: var(--text-2); cursor: pointer; transition: 0.3s; }
.im-contact__copy:hover { color: var(--text); border-color: var(--accent); }
.im-contact__copy.done { color: var(--accent); border-color: var(--accent); }

.im-footer { border-top: 1px solid var(--border); padding: 30px 0; }
.im-footer__inner { display: flex; justify-content: space-between; align-items: center; font-size: 13px; color: var(--text-3); flex-wrap: wrap; gap: 10px; }
.im-footer__left { display: flex; flex-direction: column; gap: 4px; }
.im-footer__sub { font-size: 11px; letter-spacing: 0.16em; color: var(--accent); font-weight: 600; }
.im-footer__top { color: var(--text-2); }
.im-footer__top i { margin-left: 4px; }

@media (max-width: 900px) {
  .im-services__grid { grid-template-columns: repeat(2, 1fr); }
  .im-about__vm { grid-template-columns: 1fr; }
  .im-process { grid-template-columns: repeat(2, 1fr); }
  .im-about__intro { grid-template-columns: 1fr; text-align: center; }
  .im-stats { justify-content: center; }
  .im-contact__inner { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .im-nav__links { display: none; }
  .im-nav__menu-btn { display: flex; }
  .im-services__grid { grid-template-columns: 1fr; }
  .im-process { grid-template-columns: 1fr; }
  .im-section__head { flex-direction: column; gap: 6px; }
}

body.no-scroll { overflow: hidden; }

.im-pf-modal {
  position: fixed; inset: 0; z-index: 100;
  display: flex; align-items: center; justify-content: center;
  padding: 24px;
  opacity: 0; visibility: hidden; pointer-events: none;
  transition: opacity 0.4s var(--ease), visibility 0.4s;
}
.im-pf-modal.open { opacity: 1; visibility: visible; pointer-events: auto; }

.im-pf-modal__overlay {
  position: absolute; inset: 0;
  background: rgba(20, 8, 4, 0.55);
  backdrop-filter: saturate(140%) blur(8px);
  -webkit-backdrop-filter: saturate(140%) blur(8px);
}
.im-pf-modal__dialog {
  position: relative;
  width: min(100%, 1120px);
  max-height: 90vh;
  display: flex; flex-direction: column;
  background: var(--glass);
  backdrop-filter: saturate(180%) blur(26px);
  -webkit-backdrop-filter: saturate(180%) blur(26px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: 0 40px 120px rgba(200, 50, 80, 0.28);
  overflow: hidden;
  transform: translateY(18px) scale(0.98);
  transition: transform 0.5s var(--ease);
}
.im-pf-modal.open .im-pf-modal__dialog { transform: none; }

.im-pf-modal__head {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding: 26px 30px; border-bottom: 1px solid var(--border);
}
.im-pf-modal__heading { display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap; }
.im-pf-modal__index { font-size: 13px; font-weight: 800; color: var(--accent); letter-spacing: 0.1em; }
.im-pf-modal__title { font-size: clamp(22px, 3vw, 32px); font-weight: 800; letter-spacing: -0.02em; display: flex; align-items: baseline; gap: 8px; }
.im-pf-modal__tagline { width: 100%; color: var(--text-2); font-size: 14px; margin-top: 2px; }
.im-pf-modal__close {
  flex: none; width: 42px; height: 42px; border-radius: 50%;
  border: 1px solid var(--border); background: var(--bg-1); color: var(--text);
  display: flex; align-items: center; justify-content: center; cursor: pointer; transition: 0.3s;
}
.im-pf-modal__close:hover { border-color: var(--accent); color: var(--accent); transform: rotate(90deg); }
.im-pf-modal__close svg { width: 20px; height: 20px; }

.im-pf-modal__player { padding: 22px 30px 0; }
.im-pf-modal__player[hidden] { display: none; }
.im-pf-modal__player video {
  width: 100%; aspect-ratio: 16 / 9; background: #000;
  border-radius: var(--radius); outline: none; max-height: 56vh;
}

.im-pf-modal__body { padding: 22px 30px 30px; overflow-y: auto; }
.im-pf-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 16px; }

.pf-item {
  appearance: none; border: 0; padding: 0; cursor: pointer;
  background: none; text-align: left; border-radius: var(--radius); overflow: hidden;
  transition: transform 0.35s var(--ease);
}
.pf-item__cover {
  position: relative; display: block; aspect-ratio: 16 / 9;
  border-radius: var(--radius); border: 1px solid var(--border);
  background: linear-gradient(135deg,
    hsl(calc(14 + var(--i, 0) * 3), 92%, 58%),
    hsl(calc(30 + var(--i, 0) * 3), 92%, 50%));
  overflow: hidden; transition: 0.4s var(--ease);
}
.pf-item__img {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover; display: block;
  transition: transform 0.5s var(--ease);
}
.pf-item:hover .pf-item__img { transform: scale(1.05); }
.pf-item.is-active .pf-item__img { transform: scale(1); }
.pf-item:hover .pf-item__cover { transform: translateY(-4px); box-shadow: 0 18px 40px rgba(217, 58, 94, 0.25); }
.pf-item.is-active .pf-item__cover { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent); }
.pf-item__num {
  position: absolute; top: 12px; left: 12px; font-size: 13px; font-weight: 800; color: #fff;
  background: rgba(0, 0, 0, 0.28); padding: 3px 9px; border-radius: 100px;
  letter-spacing: 0.04em; backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px);
}
.pf-item__play {
  position: absolute; inset: 0; margin: auto; width: 54px; height: 54px; border-radius: 50%;
  background: rgba(255, 255, 255, 0.92); color: var(--accent);
  display: flex; align-items: center; justify-content: center;
  transition: 0.35s var(--ease); transform: scale(0.9);
}
.pf-item__play svg { width: 24px; height: 24px; margin-left: 3px; }
.pf-item:hover .pf-item__play { transform: scale(1); }

/* ---------- 服务卡片可点击提示 ---------- */
.im-svc-card.is-clickable { cursor: pointer; }
.im-svc-card.is-clickable::after {
  content: "查看作品集 →";
  position: absolute; top: 20px; right: 22px;
  font-size: 12px; font-weight: 700; color: var(--accent);
  background: var(--grad-soft); border: 1px solid var(--border);
  padding: 5px 12px; border-radius: 100px;
  opacity: 0; transform: translateY(-4px); transition: 0.35s var(--ease); pointer-events: none;
}
.im-svc-card.is-clickable:hover::after { opacity: 1; transform: none; }
.im-svc-card.is-clickable:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

/* ---------- Modal 响应式 ---------- */
@media (max-width: 640px) {
  .im-pf-modal { padding: 12px; }
  .im-pf-modal__dialog { max-height: 94vh; }
  .im-pf-modal__head { padding: 18px; }
  .im-pf-modal__player { padding: 16px 18px 0; }
  .im-pf-modal__body { padding: 16px 18px 22px; }
  .im-pf-grid { grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 12px; }
  .im-svc-card.is-clickable::after { display: none; }
}

.im-page-loader {
  position: fixed; inset: 0; z-index: 100;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg);
  pointer-events: none;         
  transition: opacity 0.7s var(--ease), visibility 0.7s;
}
.im-page-loader[aria-hidden="true"] { opacity: 0; visibility: hidden; pointer-events: none; }
.im-page-loader__stage {
  position: relative; width: min(88vw, 560px);
  display: flex; flex-direction: column; align-items: center; gap: 0;
}
.im-page-loader__words {
  position: relative; width: 100%; height: clamp(72px, 11vw, 118px);
  display: flex; align-items: center; justify-content: center;
}
.im-page-loader__word {
  position: absolute;
  font-size: clamp(52px, 9vw, 96px);
  font-weight: 900;
  letter-spacing: -0.04em;
  color: var(--text);
  opacity: 0;
  transform: scale(0.92) translateY(12px);
  animation: loaderWord 2.08s steps(6, end) forwards;
  animation-delay: calc(var(--i) * 0.304s);
  will-change: opacity, transform;
  pointer-events: none;
}
.im-page-loader__word:nth-child(1),
.im-page-loader__word:nth-child(3),
.im-page-loader__word:nth-child(5) { color: var(--accent); }
.im-page-loader__word:nth-child(2),
.im-page-loader__word:nth-child(4),
.im-page-loader__word:nth-child(6) { color: var(--accent-2); }

@keyframes loaderWord {
  0%   { opacity: 0; transform: scale(0.92) translateY(12px); }
  4%   { opacity: 1; transform: scale(1.02) translateY(-2px); }
  12%  { opacity: 1; transform: scale(1)    translateY(0); }
  16%  { opacity: 0; transform: scale(1.06) translateY(-8px); }
  100% { opacity: 0; transform: scale(0.92) translateY(12px); }
}

/* 加载完成瞬间：文字定格放大再淡出 */
.im-page-loader.is-finishing .im-page-loader__word {
  animation: none !important;
  opacity: 0 !important;
}
.im-page-loader.is-finishing .im-page-loader__word:last-child {
  opacity: 1 !important; transform: scale(1.08);
  transition: transform 0.35s var(--ease), opacity 0.2s;
}
@media (max-width: 640px) {
  .im-page-loader__stage { gap: 0; }
  .im-page-loader__words { height: clamp(58px, 16vw, 90px); }
}
@media (prefers-reduced-motion: reduce) {
  .im-page-loader__word { animation-duration: 0.96s; }
  .im-main-wrap { opacity: 1; transform: none; }
}