:root {
  color-scheme: light;
  --ink: #10253c;
  --ink-soft: #294159;
  --muted: #667b8f;
  --line: rgba(18, 68, 102, .12);
  --line-soft: rgba(18, 68, 102, .07);
  --paper: rgba(255, 255, 255, .79);
  --blue: #0b63b4;
  --blue-deep: #124c86;
  --teal: #11a9a0;
  --cyan: #21c3d7;
  --green: #40da64;
  --danger: #d1535a;
  --shadow: 0 24px 70px rgba(28, 64, 92, .12);
  --mouse-x: 50vw;
  --mouse-y: 50vh;
}

* { box-sizing: border-box; }
html { min-height: 100%; scroll-behavior: smooth; }
body {
  min-height: 100%;
  margin: 0;
  color: var(--ink);
  font-family: "Segoe UI Variable", "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(circle at 12% 12%, rgba(39, 201, 179, .11), transparent 29rem),
    radial-gradient(circle at 90% 78%, rgba(51, 114, 188, .11), transparent 34rem),
    #f8fbfd;
  overflow-x: hidden;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background-image: linear-gradient(var(--line-soft) 1px, transparent 1px), linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(to bottom, black 0%, rgba(0, 0, 0, .76) 72%, transparent 100%);
}
button, a { font: inherit; }
a { color: inherit; }
.spotlight {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background: radial-gradient(480px circle at var(--mouse-x) var(--mouse-y), rgba(79, 191, 170, .16), rgba(65, 129, 194, .055) 42%, transparent 72%);
}
.site-frame {
  width: min(1380px, calc(100% - 40px));
  min-height: 100svh;
  margin: 0 auto;
  display: grid;
  grid-template-rows: auto 1fr auto;
}
.site-header {
  position: relative;
  z-index: 30;
  display: grid;
  grid-template-columns: minmax(170px, 1fr) auto minmax(170px, 1fr);
  align-items: center;
  gap: 30px;
  min-height: 70px;
  padding: 14px 2px 8px;
}
.event-mark {
  position: relative;
  justify-self: start;
  display: block;
  width: 224px;
  height: 68px;
  overflow: hidden;
}
.event-mark img {
  position: absolute;
  left: 50%;
  top: 50%;
  display: block;
  width: 150%;
  height: 150%;
  object-fit: contain;
  transform: translate(-50%, -50%);
}
.university-mark { justify-self: end; display: block; width: auto; height: 43px; object-fit: contain; }
.site-nav { display: flex; align-items: center; justify-content: center; gap: clamp(28px, 4vw, 58px); }
.site-nav a {
  position: relative;
  padding: 9px 0 11px;
  color: #617183;
  text-decoration: none;
  font-size: 14px;
  font-weight: 650;
  transition: color .2s ease, transform .2s ease;
}
.site-nav a:hover { color: var(--ink); transform: translateY(-1px); }
.site-nav a::after { content: ""; position: absolute; left: 50%; bottom: 3px; width: 0; height: 2px; border-radius: 999px; background: linear-gradient(90deg, var(--green), var(--blue)); transform: translateX(-50%); transition: width .2s ease; }
.site-nav a:hover::after, .site-nav a[aria-current="page"]::after { width: 24px; }
.site-nav a[aria-current="page"] { color: var(--ink); }
.hero { position: relative; align-self: center; justify-self: center; width: min(920px, 94vw); padding: clamp(62px, 8vh, 104px) 24px clamp(48px, 6vh, 78px); text-align: center; }
.hero-aura { position: absolute; inset: 9% 8% 10%; z-index: -1; border-radius: 50%; background: radial-gradient(circle, rgba(33, 195, 215, .12), rgba(42, 105, 182, .055) 46%, transparent 72%); filter: blur(34px); }
.product-mark { position: relative; display: grid; place-items: center; width: 112px; height: 112px; margin: 0 auto 22px; }
.mark-orbit { position: absolute; inset: 0; border: 1px solid rgba(16, 154, 170, .18); border-radius: 34px; background: linear-gradient(145deg, rgba(255,255,255,.88), rgba(231,248,251,.64)); box-shadow: 0 18px 44px rgba(21, 104, 145, .12), inset 0 1px 0 white; transform: rotate(8deg); }
.mark-orbit::before, .mark-orbit::after { content: ""; position: absolute; border-radius: 50%; background: linear-gradient(135deg, var(--green), var(--cyan)); box-shadow: 0 0 0 7px rgba(33,195,215,.08); }
.mark-orbit::before { width: 9px; height: 9px; top: 12px; right: 19px; }
.mark-orbit::after { width: 7px; height: 7px; bottom: 16px; left: 14px; }
.mark-number { position: relative; font-size: 25px; font-weight: 800; letter-spacing: -.05em; background: linear-gradient(105deg, #129992, #0c5caa); color: transparent; background-clip: text; -webkit-background-clip: text; }
.eyebrow, .section-kicker { margin: 0 0 14px; color: #3c7183; font-size: 13px; font-weight: 750; letter-spacing: .18em; text-transform: uppercase; }
h1, h2, h3, p { text-wrap: pretty; }
.hero h1 { max-width: 860px; margin: 0 auto; font-size: clamp(34px, 4.3vw, 58px); line-height: 1.18; letter-spacing: -.045em; font-weight: 760; }
.hero-copy { max-width: 700px; margin: 22px auto 32px; color: var(--muted); font-size: clamp(15px, 1.4vw, 18px); line-height: 1.82; }
.entry-actions { display: flex; flex-direction: column; align-items: center; gap: 12px; }
.primary-button {
  --button-x: 50%; --button-y: 50%;
  position: relative; display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-width: 188px; min-height: 54px; padding: 0 26px; overflow: hidden;
  color: #fff; border: 1px solid rgba(255, 255, 255, .42); border-radius: 16px;
  background: radial-gradient(120px circle at var(--button-x) var(--button-y), rgba(255,255,255,.25), transparent 60%), linear-gradient(112deg, #0c9b93, var(--blue));
  box-shadow: 0 14px 32px rgba(3, 82, 121, .24), inset 0 1px 0 rgba(255,255,255,.35);
  text-decoration: none; font-size: 16px; font-weight: 720; letter-spacing: .035em;
  transition: transform .24s cubic-bezier(.2,.8,.2,1), box-shadow .24s ease;
}
.primary-button::after { content: ""; position: absolute; inset: -2px auto -2px -46%; width: 34%; transform: skewX(-18deg); background: linear-gradient(90deg, transparent, rgba(255,255,255,.3), transparent); transition: left .55s ease; }
.primary-button:hover { transform: translateY(-3px); box-shadow: 0 18px 40px rgba(3, 82, 121, .30), inset 0 1px 0 rgba(255,255,255,.4); }
.primary-button:hover::after { left: 118%; }
.primary-button:active { transform: translateY(-1px) scale(.985); }
.primary-button svg { width: 18px; height: 18px; }
.entry-note { color: #748597; font-size: 12px; }
.site-footer { display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: 10px 26px; padding: 22px 0 25px; color: rgba(42,74,96,.64); font-size: 12px; letter-spacing: .025em; }

.call-main { align-self: center; display: grid; grid-template-columns: minmax(0, 1.18fr) minmax(390px, .82fr); gap: 20px; width: min(1220px, 100%); margin: 18px auto 12px; }
.operator-stage, .call-console { position: relative; overflow: hidden; border: 1px solid rgba(18,68,102,.12); border-radius: 28px; background: rgba(255,255,255,.78); box-shadow: var(--shadow); backdrop-filter: blur(18px); }
.operator-stage { min-height: 600px; display: grid; grid-template-rows: auto 1fr auto auto; align-items: center; padding: 21px 26px 23px; background: linear-gradient(155deg, rgba(255,255,255,.84), rgba(236,248,251,.78)); }
.stage-glow { position: absolute; inset: 16% 12% 18%; border-radius: 50%; background: radial-gradient(circle, rgba(27,194,211,.19), rgba(41,120,185,.055) 48%, transparent 72%); filter: blur(20px); }
.call-status { position: relative; z-index: 3; justify-self: start; display: inline-flex; align-items: center; gap: 9px; min-height: 34px; padding: 0 13px; border: 1px solid rgba(26,110,145,.12); border-radius: 999px; color: #5c7185; background: rgba(255,255,255,.72); font-size: 13px; }
.call-status span { width: 8px; height: 8px; border-radius: 50%; background: #9aa9b7; box-shadow: 0 0 0 5px rgba(120,140,160,.08); }
.call-status[data-state="connecting"] span { background: #d7a741; animation: pulse 1s ease infinite; }
.call-status[data-state="active"] span { background: #27b66c; box-shadow: 0 0 0 5px rgba(39,182,108,.10); }
.call-status[data-state="muted"] span { background: #8c7fc6; }
.call-status[data-state="error"] span { background: var(--danger); }
.operator-visual { position: relative; z-index: 1; align-self: end; justify-self: center; width: min(410px, 80%); height: 325px; display: flex; align-items: end; justify-content: center; }
.operator-visual img { position: relative; z-index: 2; display: block; max-width: 100%; max-height: 100%; object-fit: contain; object-position: center bottom; filter: drop-shadow(0 24px 30px rgba(20,72,106,.15)); }
.voice-rings { position: absolute; inset: 7% 2% 2%; z-index: 0; display: grid; place-items: center; }
.voice-rings i { position: absolute; width: 76%; aspect-ratio: 1; border: 1px solid rgba(27,154,177,.14); border-radius: 50%; }
.voice-rings i:nth-child(2) { width: 90%; }
.voice-rings i:nth-child(3) { width: 104%; }
[data-state="active"] .voice-rings i { animation: ring 2.4s ease-out infinite; }
[data-state="active"] .voice-rings i:nth-child(2) { animation-delay: .5s; }
[data-state="active"] .voice-rings i:nth-child(3) { animation-delay: 1s; }
.operator-copy { position: relative; z-index: 2; text-align: center; }
.operator-kicker { margin: 0 0 5px; color: #3e8293; font-size: 12px; font-weight: 750; letter-spacing: .18em; }
.operator-copy h1 { margin: 0; font-size: clamp(25px, 3vw, 38px); letter-spacing: -.035em; }
.subtitle-board { position: relative; z-index: 3; display: grid; grid-template-columns: auto 1fr; align-items: start; gap: 13px; width: min(620px, 100%); min-height: 70px; margin: 14px auto 0; padding: 14px 16px; border: 1px solid rgba(22,92,125,.12); border-radius: 18px; background: rgba(255,255,255,.88); box-shadow: 0 12px 30px rgba(25,71,103,.09); }
.speaker-label { min-width: 58px; padding: 5px 8px; border-radius: 9px; color: #087c79; background: rgba(17,169,160,.10); text-align: center; font-size: 12px; font-weight: 750; }
.subtitle-board p { margin: 1px 0 0; color: #334e66; font-size: 15px; line-height: 1.7; }
.call-console { min-height: 600px; padding: 23px; display: flex; flex-direction: column; }
.console-head { display: flex; align-items: start; justify-content: space-between; gap: 20px; }
.console-head h2 { margin: 0; font-size: 29px; letter-spacing: -.03em; }
.console-head time { padding: 8px 11px; border: 1px solid var(--line); border-radius: 11px; background: rgba(247,250,252,.86); color: #526c82; font: 650 14px/1 ui-monospace, SFMono-Regular, Consolas, monospace; }
.transcript-panel { flex: 1; min-height: 260px; margin-top: 22px; overflow: hidden; border: 1px solid var(--line); border-radius: 18px; background: rgba(247,250,252,.78); }
.transcript-head { display: flex; align-items: center; justify-content: space-between; min-height: 48px; padding: 0 15px; border-bottom: 1px solid var(--line); font-size: 13px; }
.transcript-head span { color: #6e8295; font-size: 12px; }
.transcript-list { height: 248px; overflow-y: auto; padding: 14px; scrollbar-width: thin; }
.empty-transcript { display: grid; place-items: center; height: 100%; color: #91a0ad; font-size: 13px; text-align: center; }
.transcript-item { display: grid; grid-template-columns: 48px 1fr; gap: 9px; align-items: start; margin-bottom: 10px; }
.transcript-item span { padding-top: 7px; color: #7e90a0; font-size: 11px; }
.transcript-item p { margin: 0; padding: 8px 10px; border-radius: 11px; color: #344e65; background: #fff; font-size: 13px; line-height: 1.55; box-shadow: 0 4px 12px rgba(34,74,103,.05); }
.transcript-item.caller p { color: #17636f; background: rgba(17,169,160,.09); }
.audio-meter { display: flex; align-items: center; justify-content: center; gap: 4px; height: 32px; margin: 13px 0 3px; }
.audio-meter i { width: 3px; height: 7px; border-radius: 99px; background: linear-gradient(to top, var(--teal), var(--blue)); opacity: .25; }
[data-state="active"] .audio-meter i { animation: meter .9s ease-in-out infinite alternate; opacity: .85; }
.audio-meter i:nth-child(2n) { animation-delay: -.35s; }
.audio-meter i:nth-child(3n) { animation-delay: -.65s; }
.audio-meter i:nth-child(4n) { animation-delay: -.15s; }
.call-feedback { min-height: 38px; margin: 4px 0 14px; color: #718396; font-size: 12px; line-height: 1.5; text-align: center; }
.call-feedback[data-type="error"] { color: #b94851; }
.call-feedback[data-type="success"] { color: #138371; }
.call-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 9px; }
.call-button { min-height: 48px; padding: 0 17px; border: 1px solid var(--line); border-radius: 14px; background: #fff; color: var(--ink-soft); font-size: 14px; font-weight: 700; cursor: pointer; transition: transform .2s ease, box-shadow .2s ease, opacity .2s ease; }
.call-button:hover { transform: translateY(-2px); box-shadow: 0 10px 22px rgba(24,69,99,.12); }
.call-button:disabled { cursor: wait; opacity: .58; transform: none; }
.call-button.primary { display: inline-flex; align-items: center; justify-content: center; gap: 9px; min-width: 174px; color: #fff; border-color: transparent; background: linear-gradient(112deg, #0c9b93, var(--blue)); box-shadow: 0 12px 25px rgba(4,94,130,.2); }
.call-button.primary svg { width: 20px; height: 20px; }
.call-button.secondary { color: #536c82; }
.call-button.danger { color: #b6454d; border-color: rgba(209,83,90,.18); background: rgba(255,250,250,.95); }
button:focus-visible, a:focus-visible { outline: 3px solid rgba(13,110,170,.23); outline-offset: 4px; }
.reveal { animation: rise .72s cubic-bezier(.2,.75,.24,1) both; }
.delay-1 { animation-delay: .08s; }.delay-2 { animation-delay: .14s; }.delay-3 { animation-delay: .20s; }.delay-4 { animation-delay: .27s; }
@keyframes rise { from { opacity: 0; transform: translateY(14px); filter: blur(5px); } to { opacity: 1; transform: translateY(0); filter: blur(0); } }
@keyframes pulse { 50% { transform: scale(.72); opacity: .55; } }
@keyframes ring { 0% { transform: scale(.88); opacity: 0; } 25% { opacity: .55; } 100% { transform: scale(1.08); opacity: 0; } }
@keyframes meter { from { height: 6px; } to { height: 24px; } }

@media (max-width: 1050px) {
  .call-main { grid-template-columns: 1fr; width: min(760px, 100%); }
  .operator-stage { min-height: 600px; }
  .call-console { min-height: 600px; }
}
@media (max-width: 700px) {
  .site-frame { width: min(100% - 24px, 1380px); }
  .site-header { grid-template-columns: 1fr auto; gap: 12px; padding-top: 8px; }
  .site-nav { grid-column: 1 / -1; grid-row: 2; gap: 34px; }
  .university-mark { grid-column: 2; grid-row: 1; width: min(44vw, 164px); height: 34px; }
  .event-mark { width: 172px; height: 52px; }
  .hero { padding: 62px 4px 48px; }
  .hero h1 { font-size: clamp(31px, 9vw, 44px); }
  .product-mark { width: 94px; height: 94px; }
  .call-main { margin-top: 22px; }
  .operator-stage, .call-console { border-radius: 22px; }
  .operator-stage { min-height: 590px; padding: 19px 16px 18px; }
  .operator-visual { width: 96%; height: 340px; }
  .subtitle-board { grid-template-columns: 1fr; gap: 8px; }
  .speaker-label { justify-self: start; }
  .call-console { min-height: 600px; padding: 20px 16px; }
  .transcript-list { height: 225px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  html { scroll-behavior: auto; }
  .spotlight { display: none; }
}