/*====================================
# 主色調
==================================== */

:root {
  --main: #009dff;
  --C2: #00caa2;
  --C3: #4bffff;
  --C4: #dc97ff;
  /* 漸層 */
  scroll-padding-top: 3rem;
  /* 錨點位移 */
}

/*====================================
# 共同設定
==================================== */

html {
  scroll-behavior: smooth;
}

body {
  font-size: 18px;
  line-height: 1.8;
  color: #333333;
  font-family: 'Roboto', 'Noto Sans TC', Arial, '微軟正黑體', '新細明體', Helvetica, sans-serif;
}

section {
  padding: 4em 1.5em;
}

a {
  color: #00caa2;
}

a:hover {
  text-decoration: none;
  color: var(--main);
}

::selection {
  color: #fff;
  background-color: #37bdc2;
}

.main-title {
  padding: 15px 0;
  font-size: 2.6rem;
  font-weight: bold;
}

.second-title {
  font-size: 2.2rem;
  letter-spacing: .5rem;
  padding: 20px 0;
}

.a-link {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.cloud-box {
  position: relative;
  padding: 25px;
  border: 1px solid #fff;
  border-radius: 20px;
  height: 99%;
  background-color: #ffffff20;
  box-shadow: 0 0 15px #ffffff80;
}

/* .cloud-box::after {
  content: url(../img/star.svg);
  position: absolute;
  left: 50%;
  top: -25px;
  transform: translateX(-50%);
  width: 50px;
  height: 50px;
} */

.txtc {
  display: flex;
  align-items: center;
  flex-direction: column;
  text-align: left;
}

.btn-main {
  position: relative;
  background: transparent;
  background-image: linear-gradient(90deg, var(--C3), var(--C4));
  color: #333;
  border: 1px solid;
  box-shadow: inset 0 0 20px rgba(225, 51, 45, 0);
  outline: 1px solid !important;
  outline-color: rgba(255, 255, 255, 0.5);
  outline-offset: 0;
  transition: all 1250ms cubic-bezier(.19, 1, .22, 1);
  font-size: 1.5rem;
  text-decoration: none;
  padding: 1em 2.5em;
  display: inline-block;
  border-radius: 6em;
  font-weight: 600;
}

.btn-main:hover,
.btn-main:active {
  color: #333;
  border: 1px solid;
  box-shadow: inset 0 0 5px rgba(255, 255, 255, .5), 0 0 20px rgba(255, 255, 255, 0.2);
  outline: 2px solid !important;
  outline-color: rgba(255, 255, 255, 0) !important;
  outline-offset: 15px;
  transform: translateY(-5px);
}

.color-main {
  color: #4e31ff;
}

.highlight {
  background: linear-gradient(90deg, #42b6ff 0%, #40d4da 80%, #42b6ff 100%);
  background-size: 100% 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  color: transparent;
}

/* =====================================
裝飾背景
====================================== */
.scene {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.scene__blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.55;
  animation: blob-drift var(--dur, 2s) ease-in-out infinite alternate;
}

[data-theme="light"] .scene__blob {
  opacity: 0.3;
}

.scene__blob--1 {
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, #c6fdfa, #b0ceff);
  top: -200px;
  left: -150px;
  --dur: 22s;
}

.scene__blob--2 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, #d0ddff, #eefffb);
  bottom: -200px;
  right: -20px;
  --dur: 17s;
  animation-delay: -8s;
}

.scene__blob--3 {
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, #f8bfff, #dcfff3);
  top: 40%;
  left: 40%;
  --dur: 25s;
  animation-delay: -13s;
}

@keyframes blob-drift {
  0% {
    transform: translate(0, 0) scale(1);
  }

  33% {
    transform: translate(60px, -40px) scale(1.08);
  }

  66% {
    transform: translate(-40px, 60px) scale(0.94);
  }

  100% {
    transform: translate(30px, 30px) scale(1.04);
  }
}

@media (max-width:992px) {
  .scene {
    display: none;
  }
}

/* =====================================
# sec-foreword
====================================== */
.sec-foreword {
  overflow: hidden;
  background-color: #fff;
}

@media (max-width:576px) {
  .sec-foreword {
    padding-top: 2rem;
  }
}

.info-box p span {
  color: #cf70ff;
}

.info-txt {
  padding: 25px;
  border-radius: 30px;
  border: 1px solid var(--C4);
}

.info-txt p {
  text-align: center;
  font-size: 1.6rem;
  letter-spacing: 1px;
}

/* =====================================
# sec-theme
====================================== */
.sec-theme {
  overflow: hidden;
  border-radius: 20rem 0 0 0;
  background: #ace3ff;
  /* fallback for old browsers */
  background: -webkit-linear-gradient(20deg, #f0ffff, #ace3ff);
  /* Chrome 10-25, Safari 5.1-6 */
  background: linear-gradient(20deg, #f0ffff, #ace3ff);
  /* W3C, IE 10+/ Edge, Firefox 16+, Chrome 26+, Opera 12+, Safari 7+ */
}
@media (max-width:1300px){
.sec-theme {
border-radius: 10rem 0 0 0;
}
}

@media (max-width:576px) {
  .sec-theme {
    border-radius: 4rem 0 0 0;
  }
}

.heading {
  color: #333;
  border-top: 2px solid #333;
  border-bottom: 2px solid #333;
  padding: 10px;
  text-align: center;
  line-height: 1.3;
  margin: 1.2rem 1rem 2rem;
}

.heading span {
  font-size: 1.6rem;
}

.sec-theme .theme-title {
  margin: 20px auto 0;
  color: var(--C2);
}

.sec-theme2 {
  border-radius: 0 0 20rem 0 ;
  background: -webkit-linear-gradient(20deg, #a9f1fd, #fbffee);
  background: linear-gradient(20deg, #a9f1fd, #fbffee);
}

.sec-theme2 hr {
  border-top: 1px solid rgba(255, 255, 255, 0.8);
}

@media (max-width:1300px){
.sec-theme2 {
border-radius: 0 0 10rem 0;
}
}

@media (max-width:576px) {
  .sec-theme2 {
  border-radius: 0 0 4rem 0 ;
  }
}
/* =====================================
# sec-speaker
====================================== */
.sec-speaker {
  background-color: #fefefd;
}

.speaker-item {
  position: relative;
  padding: 15px;
  border-radius: 5px;
  border: 1px solid var(--C2);
  background-image: linear-gradient(180deg, #fff, #ffffff10);
  box-shadow: rgba(153, 153, 153, 0.2) 0px 2px 8px 0px;
  transition: all 0.3s ease-in-out;
  margin-bottom: 2.2rem;
  height: 95%;
}

.speaker-item.keynote .imgbox::after {
  content: 'KEYNOTE';
  position: absolute;
  left: -15px;
  top: 15px;
  background-color: #91f8b4;
  color: #121212;
  font-size: 14px;
  font-weight: 400;
  padding: 5px 8px;
  line-height: 1;
}

.speaker-item:hover {
  transform: scale(1.03);
}

.speaker-item .imgbox img {
  width: 100%;
  display: block;
}

.speaker-txtbox {
  padding: 10px 5px 0;
}

.speaker-name {
  font-size: 24px;
  font-weight: 500;
  color: #817dcb;
}

.speaker-title {
  font-size: 16px;
  color: #324b4d;
  line-height: 25px;
}

/* 共用tag 講師&議程內頁*/
.keytag {
  font-size: 17px;
  line-height: 17px;
  padding: 5px 8px;
  background-color: #91f8b4;
}

/* =====================================
# sec-event
====================================== */
.sec-event {
  background: #edfbf8;
  border-radius: 0 20rem 0 0;
  background: -webkit-linear-gradient(20deg, #f0ffff, #ace3ff);
  background: linear-gradient(20deg, #f0ffff, #ace3ff);
}

@media (max-width:1300px){
.sec-event {
border-radius: 0 10rem 0 0;
}
}

@media (max-width:576px) {
.sec-event {
border-radius: 0 4rem 0 0;
  }
}
.sec-event h3 {
  color: var(--main);
  border: 1px solid #fff;
  border-radius: 20px;
  background-color: #ffffff60;
  box-shadow: 0 0 15px #ffffff80;
  padding: 8px;
  text-align: center;
  margin: 15px 0;
}

.sec-event h3 span{
  font-size: 20px;
  color: #333;
}

.sec-event img {
  display: block;
  margin: 0 auto;
}

.event-notice {
  font-size: 16px;
  color: #ffffff;
  margin-top: 2rem;
}

.slogan {
  text-align: center;
  opacity: 0.7;
  font-style: italic;
  margin-bottom: 1.5rem;
  color: var(--main);
  font-size: 1.8rem;
}

.award {
  background-color: #ffffff;
  padding: 20px 30px;
  border-radius: 0 15px 15px 15px;
  box-shadow: rgba(99, 99, 99, 0.2) 0px 2px 8px 0px;
}

.award h4 {
  color: #f285c6;
}

.award p {
  margin-bottom: 5px;
}

.award p:last-child {
  margin-bottom: 0;
}

/* =====================================
# sec-how
====================================== */
.sec-how summary {
  z-index: 1;
  font-size: 1.25rem;
  font-weight: 600;
  background-color: #fff;
  color: #333;
  padding: 1rem;
  margin-top: 1rem;
  outline: none;
  border-radius: 6px;
  text-align: left;
  cursor: pointer;
  border: 1px solid var(--C4);
  position: relative;
  box-shadow: rgba(97, 97, 97, 0.1) 0px 3px 8px;
}

.sec-how details[open] summary~* {
  animation: sweep .5s ease-in-out;
}

@keyframes sweep {
  0% {
    opacity: 0;
    margin-top: -30px
  }

  100% {
    opacity: 1;
    margin-top: -20px
  }
}

.sec-how summary::marker {
  color: var(--C4);
}

.sec-how details>summary::after,
.sec-how details[open]>summary::after {
  font-family: bootstrap-icons;
  position: absolute;
  right: 20px;
}

.sec-how details>summary::after {
  content: "\F64D";
}

.sec-how details[open]>summary::after {
  content: "\F63B";
}

.sec-how details>summary::-webkit-details-marker {
  display: none;
}

.details-box {
  background-color: #fff;
  padding: 40px 20px 10px;
  margin-top: -20px;
  margin-bottom: 20px;
  border-radius: 6px;
  border: 1px solid var(--C4);
}
.details-box ul li::marker,
.details-box span{
  color: #b36bd6;
}
.traffic-info {
  font-size: 16px;
}

/* =====================================
# sec-partner
====================================== */
.level-title {
  display: block;
  font-size: 20px;
  color: #45446E;
  margin: 1rem 0;
}

.logo-img {
  position: relative;
  transition: all 0.3s;
}

.logo-img img {
  width: 100%;
  display: block;
}

.logo-img:hover {
  transform: translateY(-5px);
}



/* ---------------
       goTop 
   --------------- */

/*形狀*/
#page-top a {
  display: flex;
  justify-content: center;
  align-items: center;
  background: var(--C2);
  opacity: 0.8;
  border-radius: 500px;
  width: 60px;
  height: 60px;
  color: #fff;
  text-align: center;
  text-transform: uppercase;
  text-decoration: none;
  font-size: 0.6rem;
  transition: all 0.3s;
}

#page-top a:hover {
  opacity: 1;
}

#page-top i {
  font-size: 40px;
}

/*右下固定*/
#page-top {
  position: fixed;
  right: 15px;
  bottom: 10px;
  z-index: 2;
  opacity: 0;
  transform: translateY(100px);
  backdrop-filter: contrast(1) blur(3px);
}

/*　往上動畫　*/

#page-top.UpMove {
  animation: UpAnime 0.5s forwards;
}

@keyframes UpAnime {
  from {
    opacity: 0;
    transform: translateY(100px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/*　往下動畫　　*/

#page-top.DownMove {
  animation: DownAnime 0.5s forwards;
}

@keyframes DownAnime {
  from {
    opacity: 1;
    transform: translateY(0);
  }

  to {
    opacity: 1;
    transform: translateY(100px);
  }
}